Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ca15973b692dfd…

MALICIOUS

PDF

67.0 KB Created: 2021-04-09 00:54:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1ff92d0a5610f963c6ee6ab41df84853 SHA-1: 41abfe14f6c47a40d63b0c5dc1eeec27068b4846 SHA-256: f2ca15973b692dfde5a1c5a2245a22c77e5434fd97433dbc23905ef01e7a3a49
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9836

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=applied+english+grammar+and+composition+by+p.c.+das+book+pdf+download PDF link annotation
    • https://nabesoke.weebly.com/uploads/1/3/4/0/134042749/lofejejeparigite.pdfIn PDF document text
    • http://wexoxunesixu.iblogger.org/lebigitilolidos.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/cMSegeD/83863171623.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/xuZHhcg/doletunezogezezokike.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/eihiaT5/19726391269.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418191/normal_600430324afe4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481990/normal_5fef5a25a5488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426810/normal_6052a7b829774.pdfIn PDF document text
    • https://rozigakix.weebly.com/uploads/1/3/2/3/132303329/suvex.pdfIn PDF document text
    • https://wudajelenap.weebly.com/uploads/1/3/4/4/134470879/lusevodumonujaxunelo.pdfIn PDF document text
    • https://gogipemefa.weebly.com/uploads/1/3/4/4/134471158/6e4a427c546a2.pdfIn PDF document text
    • https://dejizova.weebly.com/uploads/1/3/3/9/133986792/gaxufig.pdfIn PDF document text
    • http://nobizifawuzim.iblogger.org/a_letter_names_for_boy_hindu.pdfIn PDF document text
    • https://mimevomakiket.weebly.com/uploads/1/3/4/6/134693464/zifuvifuporepor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415754/normal_604cf4d5e7447.pdfIn PDF document text
    • https://godivibodo.weebly.com/uploads/1/3/4/0/134040440/bf28a78db936ee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zutibebasonuf.epizy.com/zolpidem_pharmacology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0605d580-7069-45b3-bde8-e26e6465ed64/nejapujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1740a938-e9d5-408e-87f2-52126ad89151/who_is_the_most_ugliest_kpop_idol.pdfIn PDF document text
    • http://xitamedasunur.rf.gd/bingo_free_games_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5ce371b-52d1-427e-bc58-16831284b4f8/how_to_digital_art_procreate.pdfIn PDF document text
    • http://muzasedek.epizy.com/beginner_bodybuilder_diet.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97E 5776 bytes
SHA-256: 4ecef60d63fbdf74044830bee51b6739c0000fe45628232974a3f829b7070c1d

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