Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e0ea2ddcb8098f5…

MALICIOUS

PDF

69.0 KB Created: 2020-11-20 10:11:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 33aad918275452c1a917b68731ebb1c6 SHA-1: d825877990ad18d178b1c81a91188be8287f6306 SHA-256: 5e0ea2ddcb8098f5f1fbff6ccbce9985690f2eefca7dd34d97ee9b5fe5457fa6
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://traffnew.ru/aws?utm_term=dead+space+aftermath+full+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453734/normal_5fa9836da78ab.pdfIn PDF document text
    • https://vedabigejiko.weebly.com/uploads/1/3/1/4/131438046/51c1477.pdfIn PDF document text
    • https://zuzigomotof.weebly.com/uploads/1/3/4/8/134889908/jotopesuvixinogaxixe.pdfIn PDF document text
    • https://mamonujiduvef.weebly.com/uploads/1/3/4/5/134525279/lilexo_fagun_ledememuja.pdfIn PDF document text
    • https://letitunonagafi.weebly.com/uploads/1/3/4/4/134494227/3440429.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/figugipopar/anticoagulation_guidelines_perioperative.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/182b0492-02c0-4c2d-a3f8-fb90f940c960/42713279750.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/gifanibenebud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec00aba8-e51e-49d9-9b91-cfea53d771ff/intrepid_class_starship_deck_plans.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/blood_relation_problems_with_solutions_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ec9074c-fd3b-478b-b6c5-d649cda3696f/80209904751.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7497a1d6-f062-4aa8-b17e-fb07e516b5df/technical_analysis_zerodha.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9456026-8dea-4a08-b2d7-160bbda3bda4/barbie_fashion_show_song.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_off0000cf11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF11 5452 bytes
SHA-256: a368d3fe4d3d0e1fc358e6f3be4a8c6d9d8bb260ff6ac1a5d817a6dd580d8ed8
font_01_sfnt_off0000e188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE188 11044 bytes
SHA-256: 9657acca2abc4c47a8e0f024b369dba82b3f14d51a33e5b501e0369d72919b7f

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