Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca168df5127e9f98…

MALICIOUS

PDF

46.0 KB Created: 2020-08-01 21:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c854f7f34eecf8c0715426b31a0ba4f SHA-1: 6e2c9c89abf990dea4c955f2a1c9286d2aa66526 SHA-256: ca168df5127e9f98b2329b8a476a9dadecf86c8211dae5a0053cd5fdc60f656c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. This indicates the document is designed to lure users to a potentially harmful website. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, suggesting a broad distribution or SEO poisoning tactic. The document body, though heavily obfuscated, contains the same redirector 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=the+emoji+movie+script
    • http://files.sussexflowinitiative.org/uploads/1/3/1/3/131383838/165768.pdf
    • http://files.learningwellteachersonline.com/uploads/1/3/1/4/131438460/9257592.pdf
    • http://files.harvestcommunityschool.org/uploads/1/3/1/4/131452887/viwuzalukaw.pdf
    • http://files.benkuzay.com/uploads/1/3/0/7/130739227/b5e067920.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/lolemofuje.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0354/files/javascript_static_variable.pdf
    • https://cdn.shopify.com/s/files/1/0428/1139/2167/files/61746053395.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/xexilototavewiwijenuka.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/rozunibanasofepijuzisakik.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/42822620806.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/53197193665.pdf
    • https://cdn.shopify.com/s/files/1/0432/0418/2173/files/90416064931.pdf
    • https://cdn.shopify.com/s/files/1/0433/4695/2351/files/zonifusudo.pdf
    • https://cdn.shopify.com/s/files/1/0439/7599/9646/files/pharmacology_principles_and_applications_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/26966938653.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/95678847985.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_off00007619.bin
70ef11fa62a8b7ae68a5bdd6256290415bce011e6827e321e51eaba7a6071730		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7619 5016 bytes
font_01_sfnt_off0000870e.bin
fb27e16f20ab71065eb65dafcfda2d50a231b3448557d62e2e1f9d8c9325f7eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x870E 10564 bytes

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