Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa37e89d9b3e9140…

MALICIOUS

PDF

33.9 KB Created: 2020-08-09 07:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6302d409fceed9482882a876f2777445 SHA-1: 236499b45fb27f958ffb98fec52dc602c5637747 SHA-256: fa37e89d9b3e9140e54343079081c280f6d641893b6be911443917328a3482f0
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=atkins+thermodynamics+pdf'. This URL is part of a link farm designed to lure users to potentially malicious content. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a broad SEO poisoning or link farm strategy. The primary intent appears to be directing users to the malicious redirector.

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=atkins+thermodynamics+pdf
    • http://files.veenalifestyle.org/uploads/1/3/1/4/131437402/4b85555371aa151.pdf
    • http://files.northamericanbazi.com/uploads/1/3/1/4/131452977/2068064.pdf
    • http://files.armacharlottepiedmont.org/uploads/1/3/0/7/130739027/6efe5ac2.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/sanejebeso.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2376/files/92404472651.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74098669839.pdf
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/arabic_vocabulary_words_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7915/files/applied_psychology_in_human_resource_management_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7599/2728/files/68165591673.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0454/files/vietnam_travel_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/50098851224.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/74408275574.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_off000048fc.bin
d63fb06ba181de35306568d55797e30f87417d95e0b9375320a17f3e406166ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48FC 5516 bytes
font_01_sfnt_off00005ba0.bin
cb7842a9d6b0f84c2951a44c394eb83eca46ac69f13ce424228b4f9fc69871aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA0 9328 bytes

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