Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d1e9ded378a925…

MALICIOUS

PDF

59.9 KB Created: 2021-03-10 02:21:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 04aa91ffdd29149b9875a5d526a2714e SHA-1: c604f37c79e1917dfddda94ddba3755edefc953f SHA-256: a4d1e9ded378a9252f83536619cdb7b2410fd46ac156a2909a7b5b9be1c324a8
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, many of which point to disposable hosting and are likely part of a link farm designed to redirect users. The primary URL, 'https://seumenha.ru/award?keyword=2nd+grade+sight+words+pdf', suggests a phishing or scam attempt disguised as a search result. No scripts were extracted, but the PDF structure and URL patterns are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6729

Heuristics 4

  • 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
  • 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/award?keyword=2nd+grade+sight+words+pdf PDF link annotation
    • http://wuteziben.iblogger.org/lolaketotidedomefuveni.pdfIn PDF document text
    • http://sunugukumota.getenjoyment.net/the_art_of_communicating_thich_nhat_hanh.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/automatic_control_systems_8th_ed.pdfIn PDF document text
    • https://fezewozigu.weebly.com/uploads/1/3/4/3/134318815/3736432.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483591/normal_5ffbfa1d8c015.pdfIn PDF document text
    • https://fujemolubese.weebly.com/uploads/1/3/4/0/134012375/povoxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498882/normal_600d1b9241d6a.pdfIn PDF document text
    • https://rixafivi.weebly.com/uploads/1/3/1/3/131380000/63a9eb069714d16.pdfIn PDF document text
    • http://wopebexe.66ghz.com/9128036495.pdfIn PDF document text
    • http://geloritiveda.mygamesonline.org/why_do_phobias_exist.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448124/normal_603e784e2f89d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447460/normal_5fe5d3037092e.pdfIn PDF document text
    • https://nobaloledajasom.weebly.com/uploads/1/3/2/6/132681012/kusisusuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463272/normal_603d180a98b37.pdfIn PDF document text
    • https://nebuxegakox.weebly.com/uploads/1/3/4/4/134404726/7b20c2e969cba.pdfIn PDF document text
    • https://sijujufe.weebly.com/uploads/1/3/4/6/134696532/zuxugupemudaxaji.pdfIn PDF document text
    • http://rezexepenoma.scienceontheweb.net/dometic_air_conditioning_shroud.pdfIn PDF document text
    • https://xizejaselaz.weebly.com/uploads/1/3/4/3/134357450/ad79f960.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/57353444770.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/dell_c1765nfw_printer_cartridges.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/accident_investigation_report_safety.pdfIn PDF document text
    • http://safedoguno.onlinewebshop.net/zmodo_h.264_dvr_network_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/goligulezajupavokizoku.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/97379619221.pdfIn PDF document text
    • http://gibeter.rf.gd/cb_background_hd_new_2019_png.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAC 5400 bytes
SHA-256: 8c61915fda95dbd0f9b67fff078a3d65ac0ea932c314bbd15db08bd7b36c1b0c

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