Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb98631b2f38ab6d…

MALICIOUS

PDF

51.9 KB Created: 2020-08-23 20:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b7b8f08d0671548f97259d157445142 SHA-1: a0ee537b65278caedd157442bc0ead049ef5007d SHA-256: cb98631b2f38ab6d7d1ce910f5dc7841cbfb4839c567787f53eecde2130fc612
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a technique often used to lure users to malicious sites. One critical heuristic identified a redirector link to 'ttraff.com', which is known malicious infrastructure. Another heuristic flagged the document as a link farm, with many external PDF links, predominantly hosted on 'cdn.shopify.com'. The document body contains obfuscated text and the primary malicious URL, suggesting a phishing or redirection attempt.

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=2020+audi+r8+v10+performance+review
    • http://files.airporthoppermaynooth.com/uploads/1/3/1/8/131857465/retakozalogunewu.pdf
    • http://degafoxo.jodyrathgeb.com/uploads/1/3/1/4/131407089/3bb4da3163a8.pdf
    • http://bafami.salsa2013viiisesquiannualconference.com/uploads/1/3/0/7/130775971/pilixeret.pdf
    • http://files.agingsuccessfullytoday.com/uploads/1/3/0/8/130873902/vidawavu.pdf
    • http://fegutit.vickeldarby.com/uploads/1/3/1/4/131438640/7abd62798063c.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/nusibolim.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/23110111278.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/55267536834.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/darivuluvol.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/kinavulipemekagusir.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/forces_and_motion_basics_phet_lab_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/aps_cracking_the_code.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/majeleroretikufojusip.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_off00008c36.bin
1e9b48f9ae70a8f944e468e0318ec530ba4c148f294ea49fd9f7c27572842f0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C36 5668 bytes
font_01_sfnt_off00009f7a.bin
1f34f1c86233fccc42f3a88d1a89dc50355a4b83593c61bf6299514bea8a3f5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F7A 10316 bytes

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