Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba6f4a75e40243c9…

MALICIOUS

PDF

39.7 KB Created: 2020-08-16 00:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df568c771e89d44e37f44e73a19d5d5a SHA-1: 4e5c0fcd80e5af8dabf9a074d784292f0fbc5f8d SHA-256: ba6f4a75e40243c9060170ad400b5033cf444f1e60dd1d8f48f45429f3c53da2
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is associated with malicious activity. It also hosts a large number of external PDF links, many hosted on cdn.shopify.com, suggesting a link farm for SEO poisoning or traffic generation. The document body, though corrupted, contains keywords related to health insurance and urgency, aligning with the malicious redirector's URL parameters. 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=aetna+better+health+reconsideration+form+florida
    • http://files.rockymountainflydesign.com/uploads/1/3/1/8/131857465/xikogedogufu-pokobo-wuxulir.pdf
    • http://files.nextlevelmath.com/uploads/1/3/2/6/132681448/7871584.pdf
    • http://files.honestroguegames.com/uploads/1/3/1/1/131164129/xopipeluk.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2115/files/zujiwexajiw.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/tajujunoradubapibatax.pdf
    • https://cdn.shopify.com/s/files/1/0437/2273/5767/files/86007203323.pdf
    • https://cdn.shopify.com/s/files/1/0446/6016/2713/files/school_administrative_assistant_duties_and_responsibilities.pdf
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/php_force_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/22380347659.pdf
    • https://cdn.shopify.com/s/files/1/0427/7826/3718/files/82781068468.pdf
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/32995218595.pdf
    • https://cdn.shopify.com/s/files/1/0430/7746/8327/files/makizukosudidaduravusip.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/fusifinanalinevamenami.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5069/files/26858037266.pdf
    • https://cdn.shopify.com/s/files/1/0432/0323/1908/files/alexandria_moulding_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/nilipufurifamirewuzokone.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_off00005c80.bin
300506cb6da9e161b5b02a4fc6cd1932b3a61cad0490b3b9071637ff1be7fb50
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C80 5392 bytes
font_01_sfnt_off00006e9d.bin
b834f42d343a0b4f4ef1ff8b602ee423dd01a80b0cce2271721be56186958b69
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9D 10256 bytes