Malicious PDF — malware analysis report

Static analysis result for SHA-256 be0ffa60e5a03270…

MALICIOUS

PDF

65.6 KB Created: 2020-11-17 01:15:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 69fe9e63f835d27d5126ec0104d8cf60 SHA-1: 07f072c8f4082c56e3cac2b52439998ad7a97192 SHA-256: be0ffa60e5a03270f11706bfd350fed4cb8ab878b01ba1034147e3271af83a47
156 Risk Score

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://traffking.ru/strik?utm_term=1+2+11+zone+press PDF link annotation
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/206302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382192/normal_5f8ca948db607.pdfIn PDF document text
    • https://lumixiwutetus.weebly.com/uploads/1/3/4/3/134388296/5730924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_5fad592f576ce.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/ligole/gemipinevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4924722e-a99d-44d5-a61b-be332c00af23/mad_uwu_faces_copy_and_paste.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/72370511473.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9af9cea-e22f-4da8-97e8-a1d0b2c75ac0/773571300.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/68178053103.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/71465740289.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10323662-f9aa-43c6-9063-870f6ce3f47d/setadoruvozanojenuxala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/838b497e-2a02-4b4e-87f6-e5182e1ea1ab/watch_disney_aladdin_online_free.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_off0000c735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC735 4708 bytes
SHA-256: a2c7a8a3bb40deb1972fe0ad0e9ac0589e3f03158bf3f585e8a7f361dba9afae
font_01_sfnt_off0000d756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD756 10132 bytes
SHA-256: c1bb98fa7e9cf41271079eb73923c700d2f6f2a8465a3838f4c79178f5349ebc