Malicious PDF — malware analysis report

Static analysis result for SHA-256 3808037ef928790f…

MALICIOUS

PDF

69.7 KB Created: 2021-04-04 21:11:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f1d97bf861c9054f561e6413eef1f169 SHA-1: 57f6c8fdd8b1806f38e39a265ddd7447fea52731 SHA-256: 3808037ef928790f562f9647c821a37ba773d2c3b7d251374873b6ab4109018d
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://xajibur.ru/wix?keyword=xbox+one+manual+eject+button+not+working PDF link annotation
    • https://cdn.sqhk.co/lareduke/xDchhhi/nizaritatewuxudubagar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415309/normal_60016ecd52729.pdfIn PDF document text
    • http://weramixizagob.22web.org/jukelolobefemexugaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476757/normal_5fe54f07dbbb0.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/dibBidk/pixel_buds_app_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/taxeseta/jhjjabi/bolevajetafenugorired.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/64cb66b8-cd3d-42bc-8a40-fa7c5b9c37b9/24974090777.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/87870582722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03d036d0-43e2-4f8d-b1cc-888255f4817a/terry_pratchett_quotes_witches_abroad.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/credit_report_dispute_lawyer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1771216e-827c-4860-bf04-2227aa5f9673/livoxutamifivuzanipe.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/wedding_guest_list_address_template_excel.pdfIn PDF document text
    • http://nexizali.epizy.com/javemobagipovene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac11eb0-c52a-4388-8999-5c86543e4a73/english_grammar_exercises_prepositions_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e541d8-345c-4221-af6f-b6b05d9a0ae9/difference_between_viral_and_bacterial_infection_in_cbc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bed1ec05-c779-4617-9e6a-0ef6842334ca/dirt_devil_hand_vac_cloth_bag.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/american_dad_season_13_episode_guide.pdfIn PDF document text
    • http://mimedixaresev.epizy.com/hd_background_car.pdfIn PDF document text
    • http://dukinudoxitisat.epizy.com/wefomijeme.pdfIn PDF document text
    • http://tinipolevuzow.epizy.com/zelofegunasixe.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_off0000d3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C8 5356 bytes
SHA-256: ef4967cf75fbf3664089847a070a24daa7b6eeaab84872d3b7f39938ab467df3
font_01_sfnt_off0000e600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE600 10444 bytes
SHA-256: 92aab4e30fa052443e21da1b32047d016d6d854228aff0bf7f12953e7ef8e533

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