Malicious PDF — malware analysis report

Static analysis result for SHA-256 479c2749eda92386…

MALICIOUS

PDF

42.3 KB Created: 2020-08-14 22:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94bc5075cc4879841d1701e66bea0b85 SHA-1: 3138c74b8ddf8857fa9c3782fa10bd640b39cc8d SHA-256: 479c2749eda923860a643cb02266608e03c3c95ac536d171ecba3b4da3edf788
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though partially corrupted, contains the text 'Cyanohydrin formation is reversible in base', which appears to be a lure to disguise the malicious intent of redirecting the user to the 'ttraff.com' 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.com/pify?keyword=cyanohydrin+formation+is+reversible+in+base
    • http://mabosi.littlegreenjeep.com/uploads/1/3/1/0/131070786/7e2107584da.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/50534620507.pdf
    • https://cdn.shopify.com/s/files/1/0431/1882/1530/files/beginnings_and_beyond_foundations_in_early_childhood_education.pdf
    • https://cdn.shopify.com/s/files/1/0429/5321/2057/files/92532135027.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4366/files/kaleshwaram_lift_irrigation_project.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1727/files/acute_myocardial_infarction.pdf
    • https://cdn.shopify.com/s/files/1/0439/5368/4638/files/article_about_social_media_addiction.pdf
    • https://cdn.shopify.com/s/files/1/0435/0047/0438/files/mitukabuwebulirubi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/vudamikiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedapefe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3761/3461/files/12043861593.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/ecological_succession_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/7683/7785/files/marabusalatikufipuragupa.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_off000063f4.bin
8102aadd93f54c4a3e538f860f1b072fabd7145c31d085933d3c1ca48f46aacb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F4 5356 bytes
font_01_sfnt_off00007605.bin
d178bd3f6982aeefd6f89f1de0ae3faf4b100b18c75a21edeea4b040b2c5bace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7605 10612 bytes

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