Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c07718846abf5ae…

MALICIOUS

PDF

73.5 KB Created: 2021-02-24 08:51:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 827ee9d877a5d422034453015786139b SHA-1: 41d076c42550c1d6994043e1c8f05d85f11fbec8 SHA-256: 6c07718846abf5aedccd35bd456178a68666c2ed6ab44de099c41871256537cc
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to disposable domains, a characteristic of link farms used for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, potentially leveraging embedded JavaScript for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=22.2+isosceles+and+equilateral+triangles+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393626/normal_5ff5bc75be0c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_602b573e2446d.pdfIn PDF document text
    • http://checkmyscore.info/mowulowikamgc91d.pdfIn PDF document text
    • http://fragcups.com/stickman_sniper_3d_mod_apk_downloaddevp3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461751/normal_6028160263ad9.pdfIn PDF document text
    • http://megantv.site/panasonic_plasma_tv_42_inch_specs20ytl.pdfIn PDF document text
    • http://swiss-family.space/arduino_project_handbook4kkbj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422145/normal_5fdd4a7e6de64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501028/normal_6017746da33a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405443/normal_5fd67387bc19b.pdfIn PDF document text
    • http://ledy66.net/15979469760ps6ox.pdfIn PDF document text
    • http://ita-bio.fun/1374248842782cpm.pdfIn PDF document text
    • http://fullstacket.online/like_app_download_jio_phone_me_mp3gvhs8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473403/normal_60026fa3aed25.pdfIn PDF document text
    • http://homebig.space/zidevosagugakuzamcxhm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_5fe9637b62e31.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/27058162932wvj35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421944/normal_5fdf1d6a60381.pdfIn PDF document text
    • http://ipoteka.net/access_database_templates_for_clinics1ngr1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn 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_off0000cbbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBE 5396 bytes
SHA-256: f3ba49b01689e45449eeae1a4b9a2477eb4b31e65d2583b8759f0ccef4cd787a
font_01_sfnt_off0000de34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE34 10612 bytes
SHA-256: 2bd742997f38355ab35c5774aefd6e08c1c5a889f1de08ad5f14de8d4e7f946f
font_02_sfnt_off00010273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10273 16284 bytes
SHA-256: c479ec6f10cc8a4fc4e4858234b39b9d1f22ac38f2cfe71051ad080c235d9cff

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