Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dafe9fbb95db670…

MALICIOUS

PDF

64.6 KB Created: 2021-02-24 02:29:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f5b6835c659bb394e3c48e54d42ad0e6 SHA-1: 29a45a7ab402ee78e791f3ae58920be7edbb8d22 SHA-256: 9dafe9fbb95db6706154236c8c4f5dad629b665d39ebed187d5171084405c39f
156 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 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 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.
  • 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://bologen.ru/123?utm_term=karcher+power+washer+hose+adapter PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374986/normal_6007e32559365.pdfIn PDF document text
    • https://xidelesa.weebly.com/uploads/1/3/4/4/134498911/mobusazuzus.pdfIn PDF document text
    • https://waxaveroguwako.weebly.com/uploads/1/3/5/3/135344917/bekifenetanoneb.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/5_levels_of_leadership_bookmq75y.pdfIn PDF document text
    • http://summer-italy.fun/65310634188gswk2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454301/normal_600de6ab858c1.pdfIn PDF document text
    • http://siankaanmexico.com/61455035021vz6kc.pdfIn PDF document text
    • http://webpost.pro/44176144502agpbv.pdfIn PDF document text
    • http://feyakast.online/remo_recover_android_softwarey4p50.pdfIn PDF document text
    • https://vebavorosufate.weebly.com/uploads/1/3/4/7/134742301/b596edc272ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501212/normal_5fd14b2155183.pdfIn PDF document text
    • http://eurostore.info/bootstrap_form_login_registergztng.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461207/normal_6029d6e8caee7.pdfIn PDF document text
    • https://napolapivu.weebly.com/uploads/1/3/5/3/135303388/fazuxiligo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zinudipir/dragon_quest_xi_walkthrough_gamerguides.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/elsword_crimson_rose_pve_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/jasubidexusiruduj.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/carry_on_jatta_2_hdrip_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/60337767084.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/modatepusapiwinivi.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_off0000be49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE49 5192 bytes
SHA-256: cbf35d9efac326a3922bfd15b0783b2b6ed05c2cbfca3d44a3075ef87ac245c8
font_01_sfnt_off0000d001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD001 10576 bytes
SHA-256: 70575d10a51b4814ab665888e8093664d8042bfb02ce85f4b9519c6431e57ec4

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