Malicious PDF — malware analysis report

Static analysis result for SHA-256 321c880ea6a55da5…

MALICIOUS

PDF

43.9 KB Created: 2020-08-04 15:20:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3dc5534f72f848607d2b530766de464 SHA-1: 050e698e3b9698c60fd9dc96889a65535c4ecdf5 SHA-256: 321c880ea6a55da50bab5ec0050c1ec3e87b2c22179c7115dadf335769e31e91
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector infrastructure at https://ttraff.com/pify?keyword=nmat+gmac+pdf. The document body, though heavily obfuscated, contains this URL and other links, suggesting a phishing or scam attempt. The heuristic 'SE_URGENCY_LURE' further supports this by indicating the presence of urgency language within the document.

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=nmat+gmac+pdf
    • http://files.jacquespilonmedical.com/uploads/1/3/0/7/130738596/2866231.pdf
    • http://files.tomkeatinge.net/uploads/1/3/0/9/130969389/dejuzolozuwutomedozi.pdf
    • http://files.gregorytinga.com/uploads/1/3/1/4/131407042/fudavojepipu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/32199734140.pdf
    • https://cdn.shopify.com/s/files/1/0438/4122/4869/files/6634595558.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/86416666292.pdf
    • https://cdn.shopify.com/s/files/1/0431/4831/2730/files/oblivion_race_mods.pdf
    • https://cdn.shopify.com/s/files/1/0433/4111/9647/files/sojoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5680/7586/files/geputo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/cookie_clicker_save_editor.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/nazuruxorulija.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/36608698408.pdf
    • https://cdn.shopify.com/s/files/1/0439/7616/3486/files/68865314468.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/getiloxizurefibokib.pdf
    • https://cdn.shopify.com/s/files/1/0429/0543/6323/files/osrs_hard_clue_coordinates.pdf
    • https://cdn.shopify.com/s/files/1/0437/9164/6880/files/spss_survival_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wulusiwebope.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_off00006d9d.bin
cd945af9c674ba1b4520fd817e1cbd22bfab21088c86b5c33648b5e02d6aca32
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9D 5136 bytes
font_01_sfnt_off00007f13.bin
20263b5a554bc4dc362c83462c3f0ec09e53b959bf1e1661b4a8767ea4586b0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F13 10528 bytes