Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7a5b275573749b…

MALICIOUS

PDF

69.2 KB Created: 2021-02-19 01:30:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b548aa83a547d4e8ae06a43ff863ba26 SHA-1: ad1753cac0ae52072dcb3e2501da36573a5c2514 SHA-256: eb7a5b275573749b7d2c96b2c5dc21a6ff85bd462c1a4b6e1b222ea5a95c4bc5
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm and has been flagged by ML classifiers and ClamAV as malicious phishing content. The embedded URL 'https://leonvi.ru/wix?keyword=comic+stars+fighting+3.6+hacked+version' suggests a lure to a compromised website. Although no scripts were explicitly extracted, the PDF structure and heuristics point towards a phishing or malware distribution attempt.

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://leonvi.ru/wix?keyword=comic+stars+fighting+3.6+hacked+version PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368487/normal_601a6b47bb84b.pdfIn PDF document text
    • http://wevesapawuzu.22web.org/27744668884.pdfIn PDF document text
    • https://kenojulovananav.weebly.com/uploads/1/3/4/0/134016885/69ba2.pdfIn PDF document text
    • https://galixasuja.weebly.com/uploads/1/3/4/5/134518214/1046414.pdfIn PDF document text
    • https://dalatomim.weebly.com/uploads/1/3/4/3/134344090/mibabunutil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413008/normal_602817d1f1d8d.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/remeranexe/honda_civic_2018_spec_sheet.pdfIn PDF document text
    • http://guxozuzemonixe.epizy.com/mudif.pdfIn PDF document text
    • http://dekutob.epizy.com/pathfinder_bestiary_5.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/archspire_involuntary_doppelganger.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/11715725084.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/xifalotinexenifizosoxod.pdfIn PDF document text
    • http://nutogexutal.rf.gd/sliding_barn_door_floor_guide_lowes.pdfIn PDF document text
    • http://zadiken.rf.gd/mountain_bike_size_guide_wheels.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_off0000d188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD188 5780 bytes
SHA-256: 1a205d915e0182cbb01c236318cf023640ed49913d14310600910f9fb61769ec
font_01_sfnt_off0000e517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE517 10016 bytes
SHA-256: 298b3bde17645749247332a704152e22b9f3b0850d3e178fc54dc1f77e9d240e

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