Malicious PDF — malware analysis report

Static analysis result for SHA-256 5139d298cc011cd5…

MALICIOUS

PDF

73.3 KB Created: 2020-12-22 21:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9a8e1c2676c490f898fcc2675fcc27f2 SHA-1: 294a4773c190741609dc9001badec5966b8d5d92 SHA-256: 5139d298cc011cd56750d47a400671424943f1435faa0fc3b0fc8598312e90d5
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'traffking.ru', which is a strong indicator of phishing or malware distribution. The PDF structure and embedded content suggest it's designed to exploit user trust to redirect them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/aws?utm_term=acueducto+de+silvio+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490272/normal_5fbe085a97390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_5f96ffd2cd706.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_5fad3eccbdc2c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470405/normal_5fc97a50b747d.pdfIn PDF document text
    • https://tovuwopisivid.weebly.com/uploads/1/3/4/6/134640328/fowidevibofo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5fa3245ddf02d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412996/normal_5fadad09e7571.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc17741e5c7695ca99fa7a5/t/5fcf24a810aae775716aac5c/1607410857727/the_crossings_golf_course_in_carlsbad_california.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17bfd104edf1d7784f47d/t/5fc8141ee101942bf761bbb1/1606947871030/77232348609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eced6dd3-5898-4ce7-91b2-72a2305a2248/vegexewovebodejalom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba8af6ba-310e-4468-bba9-5c440b344ad6/a_poison_tree_theme.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_off0000e15a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15A 4892 bytes
SHA-256: 244d39d8992673e275924890502f53b8338ac7fbf08cd65466fd0bda7be22001
font_01_sfnt_off0000f228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF228 11288 bytes
SHA-256: 89ec3ad45d508ea351e1f423aaac0b1322467990675011ac46d17d65482fc810