Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b1e6202ede5b409…

MALICIOUS

PDF

85.1 KB Created: 2021-05-13 11:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d3740b708a84288403a24cfcfb66f330 SHA-1: 70ab5e4098e305607ddb49d2167f70fbb5318265 SHA-256: 3b1e6202ede5b40995097514109f26896813ee92011b96d6683044c13a6c452f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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://crophysi.ru/strik?utm_term=review+of+rob+bell+book+love+wins PDF link annotation
    • http://baykamif.space/18823574913twrfs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369904/normal_5fc618df7aed2.pdfIn PDF document text
    • https://luludosob.weebly.com/uploads/1/3/4/7/134703274/dakevodukixaniraz.pdfIn PDF document text
    • http://sijazoge.iblogger.org/tall_headboard_platform_bed_king.pdfIn PDF document text
    • http://pafekusiwajida.66ghz.com/momegeforufitenus.pdfIn PDF document text
    • http://nijagegedok.22web.org/ed_sheeran_castle_on_the_hill_video_cast.pdfIn PDF document text
    • http://aicberg.net/duxivuwobafotux740id.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425909/normal_603ebd9fd0579.pdfIn PDF document text
    • http://pukegowavoja.iblogger.org/antisepticos_naturales.pdfIn PDF document text
    • http://jagojurezowu.22web.org/atom_launcher_apk.pdfIn PDF document text
    • https://jejepijukutu.weebly.com/uploads/1/3/4/1/134131362/6f8f2a4b69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_02b0d19541924999b58e2e25a3f7d841.pdf?index=trueIn PDF document text
    • https://696f1bd8-06c3-47a7-a8f7-e83e17ec8d18.filesusr.com/ugd/5ad03d_fc49173b90324794bc2252787578e5bb.pdf?index=trueIn PDF document text
    • https://c931c956-7f53-4e4e-96dc-27d7f003ba63.filesusr.com/ugd/b80c10_d759693a8dab491b9f01db9f56026f72.pdf?index=trueIn PDF document text
    • https://8eeb1f0a-0cdd-4c66-98a4-83777b49fb54.filesusr.com/ugd/64f9d2_f7805b459a8c4492bce1b6926e1b88bb.pdf?index=trueIn PDF document text
    • http://toresefitixebit.rf.gd/azimut_bula.pdfIn PDF document text
    • http://ruriwujuvuwa.epizy.com/25234864969.pdfIn PDF document text
    • https://d0fd22f1-78bd-4368-960d-2a324028b2bb.filesusr.com/ugd/a4d998_ce209817a7774af78c8976e462566557.pdf?index=trueIn PDF document text
    • http://tatatomoti.rf.gd/bankers_adda_descriptive_capsule_free_download.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EA 4620 bytes
SHA-256: 1d6b928a3e00e14b139e71d33c4ffde05ee9aadddb02f608423ca4c9ab275ae9
font_01_sfnt_off000112ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112BA 10880 bytes
SHA-256: 68c6c285e205183f0a314b09feb899807eef3fe39d840fe94a7f36ebdba3df62
font_02_sfnt_off00013791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13791 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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