Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab0e186d9a80535…

MALICIOUS

PDF

82.2 KB Created: 2021-01-25 19:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bb26e3ba2e3dc4325c749f380af48435 SHA-1: df2ca484cef52894c56745d0bea401d43e17c9c8 SHA-256: dab0e186d9a80535f1ee9c58efcf33c95f80548fa68296cd1f08c1250ccb5a23
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URIs, with a significant number pointing to disposable hosting, suggesting an attempt to distribute phishing content or malware. The presence of embedded URLs and the overall structure indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/123?utm_term=freedom+apk+%25D8%25A7%25D8%25AE%25D8%25B1+%25D8%25A7%25D8%25B5%25D8%25AF%25D8%25A7%25D8%25B1 PDF link annotation
    • https://cdn.sqhk.co/letaziseb/YRj0jbX/wezojixarorepowedepidudav.pdfIn PDF document text
    • http://tutavizukatafoz.22web.org/metanitosedotos.pdfIn PDF document text
    • https://cdn.sqhk.co/wenoxavawo/zCghii3/kingdom_builders_worship_center_pompano_beach_fl.pdfIn PDF document text
    • https://cdn.sqhk.co/redexisa/hdicNji/zombie_invasion_game_download.pdfIn PDF document text
    • http://befemuvejizu.22web.org/animation_effects_in_powerpoint_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zupitefa/f5c3Zxu/rixozomilopevitup.pdfIn PDF document text
    • https://lonegaru.weebly.com/uploads/1/3/0/9/130969637/makawuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379380/normal_5fdbdbe092032.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410694/normal_5feedddb4e91f.pdfIn PDF document text
    • https://giduzuzetedeze.weebly.com/uploads/1/3/4/8/134853145/sibuwapixivijiz_fopovadiwenet_waseveta_sikegizif.pdfIn PDF document text
    • https://jaroxifapo.weebly.com/uploads/1/3/1/6/131636664/8080865.pdfIn PDF document text
    • http://vabenawak.iblogger.org/dijamifepajogizupunarexe.pdfIn PDF document text
    • http://xenogogumemikek.66ghz.com/tactics_football_manager_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403959/normal_600689ef3928c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kesaratesur.epizy.com/77620702193.pdfIn PDF document text
    • http://begosene.epizy.com/guided_reading_activity_year_2.pdfIn PDF document text
    • http://jorowoti.epizy.com/appareil_urinaire_histologie.pdfIn PDF document text
    • http://pazalijof.epizy.com/rufaveterifelegavob.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://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_off0000ed91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED91 4916 bytes
SHA-256: eddcf0bfc29dd8a0b54be820fa65eee8a888b34b1ea64c41542529851c65855e
font_01_sfnt_off0000fe32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE32 10460 bytes
SHA-256: 88e0f9d9bf87553641d38b126e151df585adba88d77ec443decb00cf1d0fa8dc
font_02_sfnt_off00012225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12225 16648 bytes
SHA-256: b876b75cce93c4b88f594d5f78578a9167bca231bc9c93de38dcfe9cd2f292c5

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