Malicious PDF — malware analysis report

Static analysis result for SHA-256 f24a0940498a8106…

MALICIOUS

PDF

44.3 KB Created: 2020-09-01 01:16:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ad657942354d7d7521b6519248882a9 SHA-1: a90d1a411bedb9be51f8b21f83fa6496887e5090 SHA-256: f24a0940498a81067762f709973250e0ab01d4f1e184b318db808b8d64badb8a
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the URL and appears to be a lure related to a car advertisement. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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/wix?keyword=2019+cadillac+xt4+sport+performance
    • https://cdn.shopify.com/s/files/1/0429/3292/8671/files/daranakuwalumetis.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0791/files/lamovoreridufibor.pdf
    • https://cdn.shopify.com/s/files/1/0430/7333/9559/files/23727705221.pdf
    • https://static.usrfiles.com/ugd/12dc78_7314200b798b4ac09bd2d323c1f964a3.pdf
    • https://static.usrfiles.com/ugd/d54300_031ca883b5964b60af9b33d582397304.pdf
    • https://cdn.shopify.com/s/files/1/0434/6901/3144/files/94601074177.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5897/files/bimuvawosumifulubewaramid.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/67278979885.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/83697893123.pdf
    • https://cdn.shopify.com/s/files/1/0431/9507/2672/files/fimogelog.pdf
    • https://cdn.shopify.com/s/files/1/0464/6889/0782/files/ruxanig.pdf
    • https://cdn.shopify.com/s/files/1/0438/0390/2112/files/adverb_english_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0435/0047/0438/files/paiya_tamil_movie_free.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_off00006da5.bin
df11022294caf700d6abc294cea65a5619223ffd25e9a0f71e6405bf18d3e51f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA5 5844 bytes
font_01_sfnt_off0000817f.bin
deef795387619ce6710a7aad3ee7747b50b3fc5e3fc211645ba987f9eae7287f
pdf-font-stream PDF embedded font (sfnt) at offset 0x817F 10296 bytes