Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ebb6169ed979796…

MALICIOUS

PDF

75.4 KB Created: 2021-03-16 01:58:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0ae3ea23f0d1b8e3c0239c89cfaebe80 SHA-1: 21144c3a599932168e72cf516d423aa8a87c5179 SHA-256: 0ebb6169ed97979696288b9a060c2595fb0f6203163290fc0daaa40da515b0b1
186 Risk Score

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 0.9997

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://botokaw.ru/strik?utm_term=pioneer+deh-x1710ub+wiring+harness PDF link annotation
    • https://cdn.sqhk.co/duxadikoti/cKwjgJ8/95609243620.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/3ABoibP/wulejosedovomo.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/gjd1YB7/dca_apply_online.pdfIn PDF document text
    • https://cdn.sqhk.co/pumafuki/0Ufibig/weather_real_time_map.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/o0hblKC/52720532623.pdfIn PDF document text
    • http://rufefoj.iblogger.org/bonoduridekemijaru.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/icgd1p1/join_clash_3d_apkdayium.pdfIn PDF document text
    • https://cdn.sqhk.co/vabedesi/gghii9h/tevipekukefixulagitede.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/iKaB2KJ/fifa_beach_soccer_world_cup_2017_wiki.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mivezemobopu.rf.gd/room_on_the_broom.pdfIn PDF document text
    • http://magetamuwunaze.rf.gd/adjectival_form_of_friend.pdfIn PDF document text
    • http://wigezenefibi.epizy.com/best_android_phones_under_20000_gsmarena.pdfIn PDF document text
    • https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_26ff8e915c744f77975c6e97230b804a.pdf?index=trueIn PDF document text
    • https://4bd9ed84-c80b-4837-bb2f-b1353ebfd8aa.filesusr.com/ugd/5a1791_98a3f52449f844f7aa2569945e380d1e.pdf?index=trueIn PDF document text
    • http://pedefulavok.rf.gd/nowaweposukujujaseme.pdfIn PDF document text
    • https://e0bfa911-60eb-4c53-bd8d-ceec25156dfb.filesusr.com/ugd/0a052f_c19f17cb9aa04e828e0fc5ddade92d57.pdf?index=trueIn PDF document text
    • http://wulawuna.rf.gd/kyocera_printer_drivers_apple.pdfIn PDF document text
    • http://soxixebupi.rf.gd/arduino_mega_2560_datasheet_francais.pdfIn PDF document text
    • http://dijaxiletofevep.epizy.com/33830623457.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/96481094057.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/wixuze.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_off0000e8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A1 5660 bytes
SHA-256: 93b6a04d844db8c55971695693fcc57adfebe99723d667bbf3241a866c378e54
font_01_sfnt_off0000fc08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC08 10740 bytes
SHA-256: 229c03bee368e0470c85e11747f72b323f0d0867822cbb9f2374dc1f929e3a59

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