Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b53225d76b7e5e7…

MALICIOUS

PDF

44.3 KB Created: 2020-08-02 08:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c4981dc425f23e51dd5963baf1c9e5f SHA-1: f37a2166b0f3f54a3d9a49dba99f53fd1988baa3 SHA-256: 6b53225d76b7e5e70b6a73e1e0f813205883efee98ef8d9f6c895995f3612711
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.ru/pify?keyword=cannon+power+shot+s2is', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify URLs, indicating an attempt to drive traffic to potentially malicious or deceptive content. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly suggest a phishing or scam attempt.

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=cannon+power+shot+s2is
    • http://files.midrenelamy.com/uploads/1/3/1/4/131453574/689e1b94e5c.pdf
    • http://files.killjoy.info/uploads/1/3/2/8/132816158/444fa6d86d0810f.pdf
    • http://files.twofellersliveedgelumber.com/uploads/1/3/1/0/131071243/sepita.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/bekedirupiwujipisajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1541/3661/files/buwetododafopimadu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/14692285998.pdf
    • https://cdn.shopify.com/s/files/1/0428/7420/8415/files/13266671169.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/paxenegulekadaguvapelose.pdf
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/74732341800.pdf
    • https://cdn.shopify.com/s/files/1/0429/9256/6435/files/75441559490.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/mibixebagusukog.pdf
    • https://cdn.shopify.com/s/files/1/0434/0216/6428/files/make_electronics_charles_platt.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/jitezipumejosu.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_off00006153.bin
69290e7e6b6098df66cd4e1edad27d50745851dbbe1c5c4b22da056f4efdbd73
pdf-font-stream PDF embedded font (sfnt) at offset 0x6153 5004 bytes
font_01_sfnt_off00007260.bin
7875b9cf9270971194e74fab5959faf1d2df75c0f8eb18733b062aa7158aa585
pdf-font-stream PDF embedded font (sfnt) at offset 0x7260 16308 bytes