Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9377a961471e747…

MALICIOUS

PDF

36.4 KB Created: 2020-08-04 00:27:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80d5b42d0aea77acaceb4a0065551eea SHA-1: ce3b00f62ed72f77818570b7f244a44d99c27eb8 SHA-256: a9377a961471e747538f7485add61f154acc6803a2963408693bb94b5ffbfbf4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-Override

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute 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.com/pify?keyword=statistical+data+mining+using+sas+applications+pdf
    • http://files.robertsonbookreviews.org/uploads/1/3/2/3/132302963/95b71dc93406cb.pdf
    • http://files.thewaveinspired.com/uploads/1/3/2/6/132695543/f0f118e88a447bb.pdf
    • http://files.mamatgear.com/uploads/1/3/0/7/130775245/resatid-kenetanimaxada.pdf
    • http://files.kckcconcepts.com/uploads/1/3/1/3/131380871/nigozesudutavigamo.pdf
    • http://files.audiblethought.com/uploads/1/3/2/7/132712093/moworina.pdf
    • https://cdn.shopify.com/s/files/1/0433/7804/9189/files/towesogisugo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/60721695691.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/12428343807.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7640/files/92903155285.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/interval_notation_example.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/nuzoladelakojireputaxadu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/soletalerixirav.pdf
    • https://cdn.shopify.com/s/files/1/0434/2769/2695/files/8921856852.pdf
    • https://cdn.shopify.com/s/files/1/0428/1624/1831/files/the_apology_of_socrates.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/item_ids_pixelmon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7485/4812/files/broiler_chicken_rearing.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/domekowag.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_off00004ff4.bin
791682bc4b861400234b176101aaa67767219bbf70637af297b2d1bebadd6fce
pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF4 5480 bytes
font_01_sfnt_off0000628b.bin
adfde1a8b61e7cc05229315a0609a3c408ffa4b01aea5e892797659c0ea5ec80
pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 9880 bytes