Malicious PDF — malware analysis report

Static analysis result for SHA-256 40cadf153cb48553…

MALICIOUS

PDF

44.3 KB Created: 2020-08-14 19:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cc09a9c6cafd6f34132423e35cb3aa6 SHA-1: bc7a3cb14fdab2813abc76626563c24ac71acc59 SHA-256: 40cadf153cb48553103d5c1f0f650bc009b08fbdf3fdbc0e949c154043d62014
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many of which are hosted on 'cdn.shopify.com' and other domains. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wb?keyword=iot%20based%20projects%20for%20ece%20pdf', suggesting a lure related to technical projects to entice clicks. The presence of multiple embedded URLs and the redirector link indicate a likely attempt to lead the user to malicious content or a phishing page.

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/wb?keyword=iot%20based%20projects%20for%20ece%20pdf
    • http://files.bowl-of-greens.com/uploads/1/3/2/7/132740547/mukin.pdf
    • http://zufozaw.cartradio.com/uploads/1/3/1/4/131407164/milevutekom_ribodaf_biwasidized.pdf
    • http://files.versus.band/uploads/1/3/1/1/131164462/vojisaveli.pdf
    • http://xasatix.natuistholidayspain.com/uploads/1/3/1/4/131407406/pumoxit.pdf
    • https://cdn.shopify.com/s/files/1/0436/1538/7811/files/advisory_jurisdiction_of_supreme_court.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/rupanu.pdf
    • https://cdn.shopify.com/s/files/1/0449/0136/7963/files/38613400954.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xawifakupubegezixezo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/78559380546.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2580/files/69659916920.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_off00007045.bin
f8e0d4d1f4407c6594d1f27a966deb618e38d8358287bc78f1d0684e70e64835		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7045 5268 bytes
font_01_sfnt_off0000823a.bin
6bf689cdb53b8bb472f1c12fa5eb665497041aade686790b5c2028a830b09fd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x823A 10060 bytes

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