Malicious PDF — malware analysis report

Static analysis result for SHA-256 6abece4e40707a11…

MALICIOUS

PDF

143.2 KB Created: 2021-02-15 18:24:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 16f070b0fc798c8d3682fb1478d5a544 SHA-1: fe34caee1fc1540648c3b8f4b442cb7ea4872726 SHA-256: 6abece4e40707a11b4b5e3733d565c33c440fb7959d3d298407368b2d0e38d1b
134 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous external links, many hosted on disposable domains, suggesting a phishing or malware distribution scheme. The heuristic 'SE_URGENCY_LURE' suggests the document may employ deceptive text to encourage user interaction with these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/wix?keyword=manual+of+bodily+health+curse+of+strahd PDF link annotation
    • http://natfreshik.fun/82592946978xblqh.pdfIn PDF document text
    • http://ersoil.fun/tasipajudokotowaliferwjxoz.pdfIn PDF document text
    • http://nawilojobate.iblogger.org/boxing_star_apk.pdfIn PDF document text
    • http://waguzeb.66ghz.com/anglo_saxon_and_norman_england.pdfIn PDF document text
    • https://nofixemi.weebly.com/uploads/1/3/6/0/136082439/mekukodovepux.pdfIn PDF document text
    • https://zuzedunili.weebly.com/uploads/1/3/4/4/134460484/towiwajek-nawotoj-rugerom-vunovobapigev.pdfIn PDF document text
    • http://kleomaften.online/how_to_write_feasibility_study_reportsg08s.pdfIn PDF document text
    • https://zovakobazala.weebly.com/uploads/1/3/1/4/131456363/78c26388f26c9c.pdfIn PDF document text
    • http://alcexpress1.xyz/cartographic_design1gyqw.pdfIn PDF document text
    • http://vwwv-avito.online/bhojpuri_movie_raja_babu_mp4ke15j.pdfIn PDF document text
    • https://bufigolumixi.weebly.com/uploads/1/3/4/2/134234787/jarorosoloxabipa.pdfIn PDF document text
    • http://online-bestshop.xyz/646750084642gkdw.pdfIn PDF document text
    • https://merokiniperoj.weebly.com/uploads/1/3/4/6/134691049/3839e3476cae5.pdfIn PDF document text
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/sevikaduzivo_xiferolugido_suroxupo_jupiboribavewo.pdfIn PDF document text
    • https://gawozigojuvapa.weebly.com/uploads/1/3/4/8/134896601/tagunozarukux-zozolev-xupiturum-darepaxiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://raxusitusumulag.rf.gd/90459601977.pdfIn PDF document text
    • http://mumizoxagoguros.rf.gd/95703125530.pdfIn PDF document text
    • http://pekoguwomigurup.epizy.com/vegetables_in_spanish.pdfIn PDF document text
    • http://rilerulijomowam.rf.gd/lipiwekarexip.pdfIn PDF document text
    • http://veluvuwipigunuw.rf.gd/bozupuwizoxitikivuxerud.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F898 5356 bytes
SHA-256: 1b837c63ea9b776313521b2537a61eaa39d03efa33c4d290be5fb492c9f8267e
font_01_sfnt_off00020ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20AD9 10528 bytes
SHA-256: bbc2b9ba476cb0508251be154135d2c1ed5800c4f2c752e2d2cb369d5d5b3e60

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