Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8e2038dc72fcd18…

MALICIOUS

PDF

69.0 KB Created: 2020-08-04 18:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 245a5657366a111245d58cad0b0c6e27 SHA-1: 98333478eb66cf7db2231cc058fa841df4dbdd99 SHA-256: c8e2038dc72fcd1840e635ae189044439adbf3a47b6d90e52c78dfe3ae25d457
130 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting it's the primary lure. The presence of urgency language further supports a phishing or scam attempt.

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=acls+algorithm+american+heart+association+pdf
    • http://files.veritas-society.org/uploads/1/3/2/8/132814791/nokadopafivoma_bolun.pdf
    • http://files.miguelchanonafotografo.com/uploads/1/3/0/9/130969297/musel.pdf
    • http://files.odysseusorchestra.com/uploads/1/3/0/7/130738779/fetek_fewusava_disavokuwim.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/79817774308.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/21295248120.pdf
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/syllabication_rules_and_examples.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/nopipapomanuresexutimupum.pdf
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/accelerometer_calibration_methods.pdf
    • https://cdn.shopify.com/s/files/1/0435/7256/0033/files/dsc_neo_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/zesijijuxulagowujubegoduk.pdf
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/81911855828.pdf
    • https://cdn.shopify.com/s/files/1/0432/7260/1756/files/82318253184.pdf
    • https://cdn.shopify.com/s/files/1/0432/9596/5352/files/rorevugokazaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/quitclaim_deed_illinois.pdf
    • https://cdn.shopify.com/s/files/1/0440/9442/3192/files/lesowikazivo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4691/0617/files/63836261472.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_off0000cb8f.bin
c107e7f996a0255601fbb919e021d26a8343448b0d5816029768aa074f627301
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB8F 5556 bytes
font_01_sfnt_off0000de4b.bin
99c914f61bb35834e2e9c2c7571b3107ed6c15db6a057f949b0d9ca8d0d142b6
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4B 12520 bytes