Malicious PDF — malware analysis report

Static analysis result for SHA-256 1daf0298d38121f2…

MALICIOUS

PDF

42.3 KB Created: 2020-09-01 10:37:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64019d609ed56ea74ff55306a13472da SHA-1: 65314c32f032569699c8c0ed907f50daed8cc4fa SHA-256: 1daf0298d38121f2e338fd59e2e119b4b859c1648af194bd0c7ebc94e26198f2
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a common tactic for SEO poisoning and driving traffic to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.link, which is likely the primary payload delivery mechanism. The document body, though heavily obfuscated, contains text related to a 'cotton ginning process project report' and the malicious URL, suggesting a lure to disguise the malicious intent.

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.link/wix?keyword=cotton+ginning+process+project+report
    • https://static.usrfiles.com/ugd/e3834b_f2a7f5823bc8428aa8ffa706138a6ca8.pdf
    • https://static.usrfiles.com/ugd/d5415a_83ef65585c8b4458a817136edab78dad.pdf
    • https://static.usrfiles.com/ugd/b8c837_786df7fde3b647fda9709b813914d8c2.pdf
    • https://static.usrfiles.com/ugd/ad2ade_fb084825e3d94f57a28c9202ed57e723.pdf
    • https://cdn.shopify.com/s/files/1/0434/3421/3538/files/circumcenter_and_incenter_practice_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/tatijejukodorugonara.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/sevujejibugosuto.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/wagapigasojafota.pdf
    • https://cdn.shopify.com/s/files/1/0437/6811/9445/files/xirusuvidokano.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/69026959826.pdf
    • https://cdn.shopify.com/s/files/1/0431/5709/4559/files/arkham_knight_pc_updates.pdf
    • https://cdn.shopify.com/s/files/1/0462/5052/4823/files/most_important_full_forms_for_competitive_exams.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/vekolibaxajuxoj.pdf
    • https://static.usrfiles.com/ugd/516793_78bb40b6733f407a80fdec2204b6fe8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_a341ba4002a24a2db20cc92eff796463.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4506f7c46214facacc6fc0c8b826402.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_off00006660.bin
5c4e24bf417c241cbf0392587ee1f06ad8570279597b0547fed6f12d9c8103b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6660 4840 bytes
font_01_sfnt_off000076f5.bin
1c488eec63cfadda39fe15128528a37fd723944aa4d8a000da547bd95e4b4f5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F5 10900 bytes

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