Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da69e7877ea0895…

MALICIOUS

PDF

41.9 KB Created: 2020-08-16 18:37:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d8bd86dd7492cb2d4cc4a20d092a994 SHA-1: a3081180c62928170bc33de6af73aa45659502fa SHA-256: 7da69e7877ea0895d32a3c7ef11a3036bbedae62b0c42d00cfa08ccfe609a7eb
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic indicates a malicious redirector link to 'ttraff.com'. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF title, indicating a lure to download a document. The presence of multiple external links and a malicious redirector strongly suggests a phishing or redirection attack. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=understanding+statistical+process+control+wheeler+pdf
    • http://files.breathewellphysio.com/uploads/1/3/0/7/130775197/zivuzaxo.pdf
    • http://riwin.choreographerconsulting.com/uploads/1/3/0/8/130814328/647436702b98f5c.pdf
    • http://files.hybridmanifesto.com/uploads/1/3/1/8/131856012/majenak-wanimulopo.pdf
    • http://files.bestlifecoachingandconsulting.org/uploads/1/3/0/7/130775795/lizezetoludaju_xesarizosefep_vutajizavo.pdf
    • http://sated.portmelbournenetball.com/uploads/1/3/0/8/130874431/02111cc9253800.pdf
    • https://cdn.shopify.com/s/files/1/0440/8573/9670/files/rikujudaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/kikib.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/ultrasonic_level_transmitter_calibration_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6572/files/jalamutajinagidadabolesiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/mudenutekigeje.pdf
    • https://cdn.shopify.com/s/files/1/0431/8068/7524/files/88710068290.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/63137646500.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8763/files/xuxodafi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0515/5240/files/6519506692.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6615/files/90648353277.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_off00006332.bin
003fda833dd16b348bc3179fa8adefdbb044c60cc93fc194cdf36e2c9b374497
pdf-font-stream PDF embedded font (sfnt) at offset 0x6332 5500 bytes
font_01_sfnt_off000075ee.bin
53d5220cae644271ce10b8fdc5b574bf8a4bb58a5e68aab937d939ed02345e1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x75EE 10692 bytes