Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c857aace33cef7…

MALICIOUS

PDF

42.7 KB Created: 2020-08-03 21:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9281cae29c6a4a90f71e299e1d50c011 SHA-1: d82ae6249a9ec34c9078afef5a9684228098e8e4 SHA-256: 80c857aace33cef7201ac2c946567418ea95c9ecc43d9942d8bf206056e1f65d
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=behavioural+finance+book+pdf'. This URL is embedded within the document body, disguised as a link to a 'behavioural finance book pdf'. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt to distribute malicious content. 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.com/pify?keyword=behavioural+finance+book+pdf
    • http://files.joshuastringerartist.com/uploads/1/3/2/7/132710783/cc2ebe7b919cf5.pdf
    • http://files.wrestlingjerusalem.com/uploads/1/3/0/8/130873855/guvazikuvutap-tutuza-rikasezotut.pdf
    • http://files.federicoroncarolo.com/uploads/1/3/1/4/131453539/9482173.pdf
    • http://files.captivachapel.com/uploads/1/3/0/7/130775768/rovisegajutu-nebopududupo.pdf
    • http://files.chaletretreatministries.org/uploads/1/3/0/8/130874608/2d23e1e.pdf
    • https://cdn.shopify.com/s/files/1/0430/8818/3456/files/13629317057.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66048758492.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65529241957.pdf
    • https://cdn.shopify.com/s/files/1/0434/4548/5725/files/62772845053.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/talipabitagapixo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/actiontec_c1000a_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/sipusuzenafisafomurep.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/69646902733.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/1186064823.pdf
    • https://cdn.shopify.com/s/files/1/0433/8047/4014/files/totud.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_off0000695b.bin
b1cbb122d3bfbb97094f10101f4f9ecb27ccd5a79c636b91144193d26080b97d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x695B 5376 bytes
font_01_sfnt_off00007ba3.bin
c27a792fd17fcb20271e629eb5689caf5558a5a542d39a50dd5a85ad097d56bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA3 10092 bytes

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