Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d6299195b9f286c…

MALICIOUS

PDF

69.2 KB Created: 2020-07-30 12:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dac63773c9e8ff141289cc85146d547 SHA-1: 06a3801c0f8048f18c92874ce4f0fb24a36a4242 SHA-256: 9d6299195b9f286c5fba1b6989d7c35cabca32f3a90d0c65a8d4d4c09b1b252d
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, directing users to 'ttraff.cc'. It also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The document body is heavily obfuscated and appears to contain metadata rather than user-facing content, but the primary malicious intent is the redirection to the 'ttraff.cc' URL.

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=gender+in+english+grammar+pdf
    • http://files.sergiomauricio.ca/uploads/1/3/0/7/130738765/lafijimigulaxiwomaz.pdf
    • http://files.greenwichlight.org/uploads/1/3/1/4/131452935/1541169.pdf
    • http://files.reapercricket.co.uk/uploads/1/3/0/7/130776142/4278258.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2406/files/30546594700.pdf
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/bupixifoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/86090705638.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/3953834961.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/delabukobudeseboju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27039997465.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/46649669023.pdf
    • https://cdn.shopify.com/s/files/1/0433/3512/3102/files/11309898720.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/nazakuvutotanivod.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/razofavijir.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/woneletetikak.pdf
    • https://cdn.shopify.com/s/files/1/0434/8834/6262/files/kejotugi.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_off0000d329.bin
fd2ca74a356821c7ae7e1768a89c29c063ac3a5efbec131fa36b1e25e8ea9ee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD329 5084 bytes
font_01_sfnt_off0000e43e.bin
dcd50d6d324bde620f63f054dcf853b3e5258b033cead17b379d8e63113f6995		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE43E 10248 bytes

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