Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e68f5d2c0fb7665…

MALICIOUS

PDF

102.0 KB Created: 2021-07-06 15:49:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: b0c4b7115af700a605f9e325fc3b049d SHA-1: 6cdf3f8be0c8fd45330b645e7a2c7fbd17a98fa8 SHA-256: 7e68f5d2c0fb7665bf058c6ead15b19921012eb70a2ca5b232626c514213c265
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised or disposable hosting domains, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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 http://iccj.jp/images/uploads/fckeditor/file/komikigilozesetufamora.pdf In PDF document text
    • https://peterdegendt.be/file/gerenikebunivuzotetemezuk.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/zawikusoxafunok.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/8d743feb570284dfa22d9b997f52272e/zewopafoda.pdfIn PDF document text
    • http://vmkmsz.hu/userfiles/file/xunafogujapasorupexaji.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/9ssd7qnviahb8irfjtge26kao6/26053252598.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a18f90e1ca9---93444727024.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/go22g0d2rp3sv5l72q5r8lcs93/31848760712.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f2aa27706---magupefikedarugodub.pdfIn PDF document text
    • https://yalcinplayer.com/calisma2/files/uploads/sukafisugejawezos.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/1t9atgkk9hfrugb2vm4alt0glj/91202971392.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/68f70a0580fcd385270238d77685496d/zenevefuzujorokuzes.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/zigavumaxijatases.pdfIn PDF document text
    • http://ceomit.com/fckupload/file/83851426769.pdfIn PDF document text
    • http://jrmhandling.nl/upload/file/pagikenaravajojad.pdfIn PDF document text
    • https://akemi.ro/hirek/file/24258590291.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/sejere.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c28e1313114---35588286272.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073ca7d58a26---1831162888.pdfIn PDF document text
    • https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/2c0c7d2218f0e8fd1a1f4bc8666579ca/juwimomewepujitakafo.pdfIn PDF document text
    • http://agiusfuneraldirectors.com/files/file/49096493052.pdfIn PDF document text
    • http://qca.ch/userfiles/file/15733112739.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/moxijeweber.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bebd0eedf74---xuwulogitokaligivajudokix.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/buvixefikejolazoraxupo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=marketing+management+by+philip+kotler+14th+edition+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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116A3 16968 bytes
SHA-256: b5e23a985c5f4632badc547855e61e65c309f6cacec69b191e47227d1797bae1
font_01_sfnt_off000142bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142BB 16084 bytes
SHA-256: a79c9caf7d9fe7d7e6557dd08284a48a0650ee9668136fadcfdab94fba17ddb2
font_02_sfnt_off000157ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00017006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17006 11248 bytes
SHA-256: c4b15f9078673952be41473a136d0601c0e3a88cb72bde8778f3153aec027e5d

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