Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab6c1c1dd059b9b…

MALICIOUS

PDF

76.2 KB Created: 2021-03-19 18:03:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9b6c8adc8cb562c833927e6ad004b5e2 SHA-1: 69fdbcbec5de16f2b7f5a8549fa3d85e32be6316 SHA-256: bab6c1c1dd059b9b5e254a999ef21b05fb645a0942af39f199642eb03bdf6dbb
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment 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 0.9998

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://soxebez.ru/strik?utm_term=axial+scx10-2+trail+honcho+rtr PDF link annotation
    • https://mafaredoli.weebly.com/uploads/1/3/2/6/132695491/cbbb7a9c932c5.pdfIn PDF document text
    • http://psyhologrzn.ru/43704315041smyih.pdfIn PDF document text
    • http://kavalibosesevu.22web.org/learn_arabic_language_in_bangla.pdfIn PDF document text
    • http://dusosax.66ghz.com/how_to_get_redeem_code_for_free_fire_from_paytm.pdfIn PDF document text
    • https://bafalado.weebly.com/uploads/1/3/4/8/134865771/67b84d85d0d1f.pdfIn PDF document text
    • https://kigolakelo.weebly.com/uploads/1/3/1/3/131380934/56779c9c.pdfIn PDF document text
    • https://jumamugiwaxoxuj.weebly.com/uploads/1/3/4/7/134718864/98b3c9a4d.pdfIn PDF document text
    • https://lemusudavigi.weebly.com/uploads/1/3/5/3/135395292/demobidixu.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/ia8iejf/39765320745.pdfIn PDF document text
    • https://cdn.sqhk.co/gusiloxi/nESvDhj/xizapogegilipunagod.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/a304de92adb0.pdfIn PDF document text
    • http://ver-alex.website/99030767736unwlt.pdfIn PDF document text
    • https://butemupow.weebly.com/uploads/1/3/5/3/135338881/vexumetodogorilaz.pdfIn PDF document text
    • http://keepsufi.space/a_discovery_of_witches_season_3_how_many_episodesuql27.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pejabefi.rf.gd/allshare_cast_dongle_s_w_android_app.pdfIn PDF document text
    • http://vesebiven.rf.gd/fepufigagopobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fe1ec42-78b1-4008-a63e-e687627a01fe/fipaditoweximexutizelexed.pdfIn PDF document text
    • http://vabepevid.epizy.com/81968570442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/299626f5-3624-442c-99fc-a1da224e7bcd/self_performance_review_examples_leadership.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB41 5300 bytes
SHA-256: 544f806d08cec5fab3dc64b5b82c9bc1a3e4f768e51a0806b9c3fff4e79ad852
font_01_sfnt_off0000fd50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD50 10904 bytes
SHA-256: eff6e176a82e9e4bbeb1f631bae1c9917e93daafa5c246c96f44eb06a994a77d

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