Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f086a12bd774ed6…

MALICIOUS

PDF

80.4 KB Created: 2020-11-16 18:59:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7ccca62f86cb311d3938406ce5bbbc2b SHA-1: da76a275b234f53882e6bd2ff61f27a81341ab6f SHA-256: 4f086a12bd774ed686093860a8e4757efbe7c78a93acc2149228e4f8f5803a8b
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 0.9957

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=orlando+di+lasso PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368958/normal_5f89018767e86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413966/normal_5f9a061f9705e.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/51ad8eeff7fa53.pdfIn PDF document text
    • https://nunigagajil.weebly.com/uploads/1/3/4/7/134751499/a44a7bcffe8.pdfIn PDF document text
    • https://fimosezit.weebly.com/uploads/1/3/0/7/130775491/c2b42d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392237/normal_5f90a93516215.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/86fd21bc-1885-4c59-a3ff-781c1b60470d/xolinadimoloxevupom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/779dbee5-59ca-48f7-8fdb-232e39cad2de/.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f55bb37-1f9e-4fdf-8343-fbf088ffbb60/cepde_gta_san_andreas.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000119d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x119D7 17528 bytes
SHA-256: d16d8f1b963a694c82635f938f6cfe9b4e2d17e697b73929634f75e5275774f2
font_00_sfnt_off0000e37a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37A 4844 bytes
SHA-256: 46469b6818906d689fac2d8840d3a475b673f03bf99ae4d30dd851b7debaefe2
font_01_sfnt_off0000f3f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F7 11544 bytes
SHA-256: e58955ab532f2f77b5be7f4b908d55d23452348f17517938ca02a48c0fc1f8c6