Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c9004efa1e27a6…

MALICIOUS

PDF

94.8 KB Created: 2021-07-21 08:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 5ac53516a493c230107aa60d01162e86 SHA-1: 001b84e0698273d3f686ac6899bf02d1206ef8fe SHA-256: 70c9004efa1e27a6a5dcada75184dbe47b2e11894d5fdded4654bd7009540eba
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The 'SE_BROWSER_INSTALL_LURE' heuristic suggests the document is designed to trick users into installing harmful software by posing as a necessary update or extension. While no scripts were directly extracted, the presence of numerous links to potentially compromised or disposable hosting sites, coupled with the lure, points towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://dobre-jaja.com/Upload/file/19951770981.pdf In PDF document text
    • http://alpha-th.com/userfiles/file/57901371520.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/20911000066.pdfIn PDF document text
    • https://verandapattaya.com/userfiles/files/nevov.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/ng7968acqf8mk4qbqifujbuavm/tatafigew.pdfIn PDF document text
    • http://daebokjungdb.com/uploads/files/65941153148.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/705fc3440e2b79d54f25332908462b8c/61449730724.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160b055ed3ff49---34800605443.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c14b1be7240---81339987575.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbf162497c---48327875716.pdfIn PDF document text
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d5c4dc1b1---86113795438.pdfIn PDF document text
    • https://shen-su.eu/gfx/userfiles/files/xadoworakoluzudozij.pdfIn PDF document text
    • https://bouwservicewinthagen.nl/userfiles/image/file/22573337371.pdfIn PDF document text
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/rolokewutepazujef.pdfIn PDF document text
    • http://inwallendorf.de/userfiles/file/75719898627.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/gagowe.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/39c35hk4el8kvbl2uvkq84dbi1/41634565621.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a89ec2a80fc---jezebodugox.pdfIn PDF document text
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/4d7550e2532e0242f0509b835e4f454f/57492530974.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c60229c5cc2---dofakix.pdfIn PDF document text
    • https://mahae.hu/files/files/53978161105.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6e76ac80f0---44644424869.pdfIn PDF document text
    • http://targhevaticane.it/userfiles/files/jubewekimubot.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/16073d9a0abb69---medikisaf.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a8472326da4---tekawok.pdfIn PDF document text
    • http://farashimirooz.com/files/bubuxujefigizorulevilotu.pdfIn PDF document text
    • http://pngroup.pl/ckfinder/userfiles/files/javafukivofapolisumataba.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=download+french+arabic+dictionary+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f68f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68F 10888 bytes
SHA-256: 5f0be0ffc9328706d2ab07a6b5a7d640444c24ae941305e7164863aa29398bcd
font_01_sfnt_off00010f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001278c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1278C 16684 bytes
SHA-256: 5786d7639d2cc1522a1a3889fae5b5c9fbcbd5f5c9de2f5a2930a0e54327038d
font_03_sfnt_off00013f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F25 17880 bytes
SHA-256: 054f269a958a85bd73823d9b1d0f7cced56822a0f1da04676bd1b32acb9db7a8

Open this report in the interactive analyzer, or submit your own file for analysis.