Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af4754d8c7b3a43…

MALICIOUS

PDF

40.2 KB Created: 2020-08-30 12:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2fbb3d795db643925f99421bce1124f3 SHA-1: 770d36ccbae8af6a09a8f6352ee8c173618f26a0 SHA-256: 4af4754d8c7b3a435ad5ce28cd2fee6d5e9397f3588d48af8f7361c8b89fdb0e
130 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation or to host further payloads. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body also contains urgency lures, suggesting an attempt to trick the user into clicking the malicious link.

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/wix?keyword=after+pdf+anna+todd
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/favabuxewesonegimonuvoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/7125/8278/files/9572161232.pdf
    • https://cdn.shopify.com/s/files/1/0434/1606/0061/files/bijobixijo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/62709588638.pdf
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/ropemadop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/bezoxodulililodelejezo.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5003/files/vixoxagesewidapixo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4646/1852/files/playing_card_apps.pdf
    • https://cdn.shopify.com/s/files/1/0433/6304/1430/files/talley_clinical_examination_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0462/7903/2992/files/fisenasaweg.pdf
    • https://cdn.shopify.com/s/files/1/0430/0881/9349/files/89515757122.pdf
    • https://static.usrfiles.com/ugd/d01287_6c0f70e6b2a340e8b6f3a20d73837bf5.pdf
    • https://static.usrfiles.com/ugd/b8c837_24f40ae37c9043b6b7bc1a45d3cb2a28.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_off00006135.bin
31b75c87b287d559cfe5c8c89c693f3f38e4a631e2690282192f7cfde40f95b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6135 4812 bytes
font_01_sfnt_off0000719f.bin
99ca439702db86baf08f24660107f4c68855e9121547410515a24152bcaea8f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x719F 10176 bytes