Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a986115d6dea166…

MALICIOUS

PDF

88.5 KB Created: 2021-08-08 16:56:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2d64b75491914bed81510a8c1dd580b6 SHA-1: fe74d70aa396c9bf395bc58df7b5d65fc51dfd77 SHA-256: 7a986115d6dea166f17c1bfb1cadb7d1cdba371c809c202dc123dc09ddeb69b9
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document functions as a link farm, directing users to numerous external websites hosted on potentially compromised CMS platforms. These links are likely intended to facilitate phishing attacks or distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://ketchas.ru/uplcv?utm_term=how+to+set+up+a+itouch+watch PDF link annotation
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607db35e516b9---zifujeledixakagud.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072247c138a0---zurawupilom.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c71967f0e17---50478228515.pdfIn PDF document text
    • https://strechybenesov.cz/content/76782033326.pdfIn PDF document text
    • http://chipublichouse.com/ckfinder/userfiles/files/84040979543.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/3d3vb8me9qf7hu1crhi98879v5/dibunebo.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/16076ad9838edb---79217940078.pdfIn PDF document text
    • https://gberwanda.com/gbe/useruploads/blogs/files/garemekiwarogelipirope.pdfIn PDF document text
    • http://mobiliteit.nu/files/vofusajogisujawawobor.pdfIn PDF document text
    • http://poorclarescork.ie/images/3279312164.pdfIn PDF document text
    • https://www.carrentchiengmai.com/files/wopap.pdfIn PDF document text
    • http://atenngo.com/admin/sites/site/documents/zupob.pdfIn PDF document text
    • http://surmounttravel.com/userfiles/files/68156355806.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160885ed45a55c---jesefukidegaguvoke.pdfIn PDF document text
    • http://tiszaikaland.hu/upload/file/pobodu.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160867a500711f---xumanuxo.pdfIn PDF document text
    • http://baybayankaauamo.com/clients/c/c9/c9e0f772d4a556598cfa564a27137582/File/durekamugazevepazusu.pdfIn PDF document text
    • http://thy-environment.com/userfiles/files/15437096882.pdfIn PDF document text
    • https://paperland.bg/uploads/file/24808916299.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/495esskot24p0ug4m0aini8230/73989753817.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e68ab425aea---jiwanisupigaxuru.pdfIn PDF document text
    • http://bukharageorgia.com/sites/default/files/file/wepokevepujaluwave.pdfIn PDF document text
    • http://odontoflash.eu/userfiles/files/dotigilijigetezitamev.pdfIn PDF document text
    • http://cokhihoangvinh.com/uploads/userfiles/file/61378544494.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/21228217527.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF887 10400 bytes
SHA-256: bc7aaedab77137cc45a6914207c0c40eb2e3c8d17b731a7f2f4341b08bcef808
font_01_sfnt_off0001104d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001285f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1285F 16660 bytes
SHA-256: eb55ba1cf4a865a1f63594a191db7b69041ce6c4c59a7f301ae646aa3e01aebc

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