Malicious PDF — malware analysis report

Static analysis result for SHA-256 09796a77132614a5…

MALICIOUS

PDF

70.0 KB Created: 2020-08-09 16:49:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 008846d77bf43e6f112988ea29fc9fa3 SHA-1: a61d1526473b97da881676f42baa8b3ed417d9df SHA-256: 09796a77132614a577f28ae6f63e4c8915003cfd10bafc3360b5740c6d8c2c50
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to external resources. One of these links, 'https://ttraff.ru/pify?keyword=bmw+118i+technische+daten+2020+pdf', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to direct users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.ru/pify?keyword=bmw+118i+technische+daten+2020+pdf
    • http://files.sharonceslak.com/uploads/1/3/1/4/131483307/xifepamudolebudi.pdf
    • http://files.soxoflove.org/uploads/1/3/0/8/130814855/bufidat-xodoja-xepen.pdf
    • http://files.atlanticirishfest.com/uploads/1/3/0/7/130776757/sotipaki_wulokamexifak_seroxux.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3800/6687/files/71796498652.pdf
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/vezusejufipubovuwok.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/ielts_vocabulary_list_for_listening.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/xodukadenakerufosiwuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/ginurowodefovipigoxewopez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigazisamakolomomabixefox.pdf
    • https://cdn.shopify.com/s/files/1/0430/0754/1401/files/lurudewapanu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://cdn.shopify.com/s/files/1/0448/0139/2801/files/english_test_for_job_interview.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c626.bin
b27345c820ec125942e599807676c197f8ed6c23e6287f7d5d4d8a43a02c93c4
pdf-font-stream PDF embedded font (sfnt) at offset 0xC626 5928 bytes
font_01_sfnt_off0000da4d.bin
654df73a06d1c196d6d5c61f80eb7774b977f011edb47a3c610632c8bafa52db
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4D 16248 bytes