Malicious PDF — malware analysis report

Static analysis result for SHA-256 e569d4a47720bad3…

MALICIOUS

PDF

76.8 KB Created: 2021-04-23 12:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: c9cbdf217e0531a62efde6f8f0337692 SHA-1: e3c067bad1185059e5a6fa43b3fa6e21567fa829 SHA-256: e569d4a47720bad3a97e50bf49abf9c3de449433f6ba39352dd4ec837f7c8371
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable hosting services and are part of a link farm, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=praise+and+worship+songs+lyrics+and+chords+free+download PDF link annotation
    • https://bawozumop.weebly.com/uploads/1/3/1/4/131452782/f74e6ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369146/normal_6046320a4537e.pdfIn PDF document text
    • http://fegudifo.22web.org/xasokakezajuni.pdfIn PDF document text
    • https://rasetakewalufil.weebly.com/uploads/1/3/6/0/136086978/e2854f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403936/normal_606761de812fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387229/normal_5fd8330b50fed.pdfIn PDF document text
    • https://linajijokib.weebly.com/uploads/1/3/4/0/134000065/5099525.pdfIn PDF document text
    • http://kororepunugited.iblogger.org/tuzaso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415321/normal_601112687320b.pdfIn PDF document text
    • https://lezanaxowap.weebly.com/uploads/1/3/2/6/132696506/fd7eecd5863.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450640/normal_5ffa3b173f31d.pdfIn PDF document text
    • https://davabodijesofid.weebly.com/uploads/1/3/4/4/134474123/5091469.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nixuverojezuluz.epizy.com/hand_operated_capsule_filling_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d372222f-2c0a-4a6b-ab23-87ffe504019e/24391777261.pdfIn PDF document text
    • http://wowawese.rf.gd/bamedumenij.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/nepumimumamexodewe.pdfIn PDF document text
    • http://fuxufotab.epizy.com/gipabem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/679e15f2-55d3-4594-84ec-cb5ba344e69b/how_do_you_get_hilton_rewards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae3322df-4cc5-49ef-878e-963c876eff6d/electrical_lighting_control_symbols.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e1d9435-ac62-4c0b-8e64-f75e1eeea17d/52812507149.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/kinemaster_premium_cracked_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34e52626-222f-436b-ae86-6ba1908ec8f4/jivunejikakoxabaj.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/jejisiti.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC41 5612 bytes
SHA-256: 354413cd910c73560ff920f2e0e42e5cb2b558b10686fc44b7993bccf13a8d3d
font_01_sfnt_off0000ff6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6A 11156 bytes
SHA-256: f0a86b14626dea9425166a8dd1da9a3e5deaf8b8ce7d36d8ed6a6324a0a6e090

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