Malicious PDF — malware analysis report

Static analysis result for SHA-256 047f753e6ad34f21…

MALICIOUS

PDF

69.6 KB Created: 2020-11-26 10:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7608bf789cec837371673adbb8c1e954 SHA-1: a89e2fb401c5b63af229335a9f3216a2370b2a41 SHA-256: 047f753e6ad34f21ad0c7e4f6b6ad4f79e3949e7428c54c58f18468d8f37fc5f
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, with one primary malicious URL being traffnew.ru. This suggests the document's purpose is to redirect users to potentially harmful sites, likely for phishing or to download further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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/strik?utm_term=mammoth+cave+weathering+and+erosion PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413455/normal_5fa5ad956789a.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/kagejosuwu-bufegolofajog-pujefadu.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/63a71c6f-6738-443b-8c45-213b18e1d3b9/benjamin_franklin_walter_isaacson_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/700df47d-2ae5-47e9-bee8-b171a0387dc1/kejadilavisode.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/7954829669.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f17e35c-228e-4ac0-a3f1-ec41ba119b2e/daily_blessings_farm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f04db0a-6406-4bd8-aba4-4f12545c5227/28850879728.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaeab983-bed9-4bee-aeb4-096ef69b3e0c/hide_in_plain_sight_5e_revised.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9e03028-ddee-4a0a-92e4-b05db53f90a6/xoveba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/332b6857-5ce7-424e-96b1-2751b7bbf04f/infantino_mei_tai_hip_carry_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/radilixeguwadopuzuloxumoj.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_off0000d4a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A6 5480 bytes
SHA-256: 2dc338d7b2bf67e861f696c7f8f39453f22bcdb73db1f754135a080734c1b371
font_01_sfnt_off0000e73c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73C 10080 bytes
SHA-256: 40c331a196249b2a908466fbe65a447ae7189f076483088c965159903597ba37

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