Malicious PDF — malware analysis report

Static analysis result for SHA-256 562afdf74d9cf786…

MALICIOUS

PDF

42.1 KB Created: 2020-09-02 11:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8945c69080febeec1ab4f01221ef9b71 SHA-1: 4f87c410ed8e0410a6b3b078cc0a8bd7ed67710d SHA-256: 562afdf74d9cf786a274fdb7d7cf03d0b95196c61b6d123b264d938d49447ac8
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a malicious redirector link. It also contains a mass of external PDF links, indicating a potential link farm for SEO manipulation or to obscure malicious destinations. The primary malicious URL identified is `https://ttraff.cc/pify?keyword=bleacher+report+nba+injuries`, which is likely used to redirect users to a malicious site. The document body contains garbled text but includes the same malicious URL and several benign-looking PDF links.

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.cc/pify?keyword=bleacher+report+nba+injuries
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/ranolugud.pdf
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/94771867522.pdf
    • https://cdn.shopify.com/s/files/1/0433/1572/4456/files/3363256027.pdf
    • https://static.usrfiles.com/ugd/590778_da4560b8a18144bfaa0e1213537435ee.pdf
    • https://static.usrfiles.com/ugd/2d797c_18506f3935a149a6875d1ed2cc3d8867.pdf
    • https://static.usrfiles.com/ugd/15ebe2_74f2dd30f9074f3fbbdf23455a7ce404.pdf
    • https://static.usrfiles.com/ugd/5ecadc_aff91e13c79e421f9ff975a49710b2c8.pdf
    • https://static.usrfiles.com/ugd/3f0e57_1c0eb5aea856461faf4dd2edf2259b07.pdf
    • https://cdn.shopify.com/s/files/1/0463/3024/9377/files/36485919183.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6662/files/bidayatul_mujtahid_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0435/4945/8591/files/nugakafomugaxonexix.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_b1c0b099a7424c6aa0f1a6127a104573.pdf
    • https://static.usrfiles.com/ugd/60933b_f3ea66a5de764aff8e1bb758e82e9496.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_off000067bd.bin
be78a5abd1a8742ee5037351423a2e80697a2b3fda5f5bfa3332ea900cf0be81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67BD 5284 bytes
font_01_sfnt_off000079ac.bin
01428971d239c141892fb5f07ad043c62b563a0e1c8f34bc2eeb64c54260a3bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AC 9980 bytes

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