Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5c9ca11f5c06d7…

MALICIOUS

PDF

62.8 KB Created: 2020-08-23 11:15:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 585f6c0eaa2112a18d58f674bf58eff3 SHA-1: 50e266bfbcfdf8980d1e6cbd8b4ac7992a00b911 SHA-256: ba5c9ca11f5c06d768706fd2fe9a00c0fb9bdf0b0b37c07e48c8537fb1b3d1f2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=scissor+jack+design+calculations+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0433/5848/6678/files/bokunozezemajozuk.pdf'. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting the primary intent is to lure the user to this malicious site.

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=scissor+jack+design+calculations+pdf
    • http://files.cataclysmpictures.com/uploads/1/3/0/7/130775156/xewutulo-gevujet.pdf
    • https://cdn.shopify.com/s/files/1/0433/5848/6678/files/bokunozezemajozuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/7602/4475/files/free_ethiopian_history_books_in_amharic.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/zetaxonozoniwedaxada.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/antipsychotic_drugs_mechanism_of_action.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/51524416285.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/50358208848.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3881/files/61711481054.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2095/files/pudarefoliriva.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/mamuxonazitozufuxidovute.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30347825404.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3654/files/ginokuwewekutulopotabomak.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/dexalipenutemukezepeme.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/adenovirus_canino.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_off0000a966.bin
0b8f5e9bd6e005b423b25b12a22a5c0f33b6f733a94927482ce6863218d9da85		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA966 5564 bytes
font_01_sfnt_off0000bc63.bin
588e9912a408e8d25f7d488aeb3158e0a59f39843862710cd039cbf22bfdbf10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC63 15808 bytes

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