Malicious PDF — malware analysis report

Static analysis result for SHA-256 f167b9eef66cfbbf…

MALICIOUS

PDF

72.3 KB Created: 2020-12-19 21:08:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f80b7d16690435bd49e6f07cbad5d980 SHA-1: d5337a79a42a047e09384c0d3a94379b1b4a8b54 SHA-256: f167b9eef66cfbbff3356edf2899ec4be1e735255b6ef79439b2f64709ffc09a
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?utm_term=arby%2527s+menu+calories+fries PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422133/normal_5fbeb8fe1cc1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384145/normal_5f8c5e7cb8634.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472475/normal_5fb7e329e6f36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443371/normal_5fbe2f606d36a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f874906054fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f8f19e9bfb20.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/60e7bf09-1613-405a-b724-4ecbfa824a4e/wuzikejusolotumixagemar.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2b2255b18a2b82c09c96/t/5fdd4842463d3b6c6f1b22a4/1608337475668/46528594374.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d650403f5353fd956949/t/5fc133899ee0f32b877e55b0/1606497162541/72584836185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db0ac78c-5c89-4fb9-8107-f87518b6a60f/76070390359.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/zemimakozusiginozeriteki.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03E 5096 bytes
SHA-256: a920ddd39f4752789b3c023dd7add918df59411be352d36ba613b47674a43954
font_01_sfnt_off0000e176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE176 10660 bytes
SHA-256: 613c317fef216fe95cc0dd97355e6bbef16de53c8f597c2bdf7a4cade2fec516
font_02_sfnt_off000105e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E7 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c