Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f5ab17b727ee3c9…

MALICIOUS

PDF

56.9 KB Created: 2020-08-14 23:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 440585fd0fd4c9059432125e419d7884 SHA-1: 070ce9af9bab70cc1b92fa8111ca391d822382bd SHA-256: 6f5ab17b727ee3c948c73f3a1f4bd6e24c61db188ae961fef43c9722c592dc83
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector infrastructure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute further content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=chamanthi+puvva+song++telugu In PDF document text
    • http://files.epona-equine-reiki-centre.co.uk/uploads/1/3/1/6/131606260/dopusedumakuxebine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/vetadadawaxomonaxakifafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3415/4907/files/16355947898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1123/3176/files/animaniacs_country_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/kajoxexakixemalunubafapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/xugojumomajilin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4327/3369/files/motojenuduvoxedakipepom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5796/1374/files/fisica_para_la_ciencia_y_tecnologia_tipler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8106/files/sadon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0141/files/tipos_de_cateterismo_vesical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/al_quran_dan_terjemahan_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9924/3174/files/25829203198.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA071 5100 bytes
SHA-256: 7093c4b422c45b41acf14b5db413b22e1412d633f50ec62d67d18c6fb9d1330d
font_01_sfnt_off0000b1b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B4 15004 bytes
SHA-256: c85c217e3fc8f7ad784c37f6848098cd317c3472840929a28b40a7ca19c3886f

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