Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a2bd949d9d6aaa…

MALICIOUS

PDF

68.5 KB Created: 2020-11-14 12:24:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e152f3b0781ca36142683bf9ad68c2e4 SHA-1: 117fb728b781e1147f9d42b86cc89e8dbb1376e4 SHA-256: 46a2bd949d9d6aaa3351b0ba441db6d19de3274ff7616473c0382d66d6a755ff
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-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://traffking.ru/123?utm_term=another+word+for+style+guide PDF link annotation
    • https://menaxogem.weebly.com/uploads/1/3/4/4/134432074/e7e0d1.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/rotowan/mlp_super_rainbow_dash.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/90370646179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f11c519f-52da-46ac-8905-6d55851bfd72/9311432541.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/diwajevudaridaxuzopeko.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/mobile_strike_hacks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ccd49b9-d9fa-474e-b63f-fcf7dee1393c/learn_2_fly_unblocked_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/995c7102-c94a-48bc-8173-fcdb865bf8ba/zibazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69d6e0b4-4394-43ad-9923-5868c8290dbe/miami_peacock_bass_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/nokanesoxebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed115869-a62e-472c-9d82-ddee49c8fce6/343916970.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62cb238a-7ff7-4f71-9b6e-50e56cc46778/puwugaso.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_off0000cd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD86 5140 bytes
SHA-256: 9bbbc1255c42d843c9caf380fb7a4476141f0fe32d1cbaf1689540851ffce1be
font_01_sfnt_off0000df1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1D 11240 bytes
SHA-256: a3ce10f6f2397af0b74cc41ad65075914dfe6ce599bc1f472cdd3bec7be5387e