Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad423d60460c547c…

MALICIOUS

PDF

43.9 KB Created: 2020-08-12 03:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71c0b77e5bf70abcab691e595703d1aa SHA-1: c2076bd6edf4bf83ea0a816b875429e361deb4d0 SHA-256: ad423d60460c547cee3f2baa1e5e433df33ecea2f52dc614802f88eb34dbb69c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bestiario+anab%25C3%25B3lico+pdf+download'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs, including benign ones hosted on Shopify. The primary malicious URL is likely used to redirect users to a harmful destination, disguised as a free PDF download. No scripts were extracted from this sample.

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.ru/pify?keyword=bestiario+anab%25C3%25B3lico+pdf+download
    • http://files.oleanbarbershopchorus.org/uploads/1/3/1/3/131380295/wedijelesopet.pdf
    • http://files.regcakes.com/uploads/1/3/1/6/131606046/meretozibinijuw_senamugere.pdf
    • http://kaxotiriz.laurelparkespta.com/uploads/1/3/2/6/132681670/53918599a29cfa1.pdf
    • https://cdn.shopify.com/s/files/1/0431/2272/0922/files/persona_5_throbbing_king_of_desire.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kumug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/fotisukopa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdf
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/juvewuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/9993/8211/files/nowova.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/learn_python_3_the_hard_way_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/beccaria_crime_and_punishment.pdf
    • https://cdn.shopify.com/s/files/1/0431/7760/7324/files/98789316834.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/asteraceae_cladistics_and_classification.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/delete_watermark_online.pdf
    • https://cdn.shopify.com/s/files/1/0438/9906/0376/files/61720683512.pdf
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/wasisadexabijuximu.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000697d.bin
a24f5dbadb9a0ca26b7ae126d42f559b1c73065f38733307fa7bc7e382aaad87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x697D 5564 bytes
font_01_sfnt_off00007c41.bin
4c979655cdb3a9e22088d8505a33b077efeb79942de4bfa6a88faff119a34c56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C41 11188 bytes

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