Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a195d2813412950…

MALICIOUS

PDF

44.1 KB Created: 2020-08-05 17:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ae943b174270c07360a16eb38ebdaab SHA-1: 14b616635c6aad31ad331e796a28f26c0faa5d11 SHA-256: 3a195d28134129500c5b8580e3e31dab5385671cc0a2fe7b9a936f8396047d0d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous links, including one to a malicious redirector, indicates a link farm or redirection attack designed to lead users to harmful sites.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=characteristics+of+descriptive+research+pdf
    • http://files.skyfieldtropical.org/uploads/1/3/0/9/130969305/8258250.pdf
    • http://taponiko.richmondblackwidows.com/uploads/1/3/0/7/130775732/vabatadem-kikute-lekidedizakel-tilamenupezuzez.pdf
    • http://files.brittanyprimavera.com/uploads/1/3/1/8/131857315/559036.pdf
    • http://files.redshift-consulting.com/uploads/1/3/1/1/131163969/mufulebarasebos-kepefigoxigon-rikuvali-rawajurefe.pdf
    • http://files.trebellasdance.com/uploads/1/3/2/6/132696330/tedoxoletutam.pdf
    • https://cdn.shopify.com/s/files/1/0440/5015/3622/files/59369133844.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vatajimawi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7152/0411/files/jekerisujad.pdf
    • https://cdn.shopify.com/s/files/1/0429/3879/4147/files/black_box_unicode.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/surigogukeku.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0486/files/51553776176.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/79594238000.pdf
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/texewanuvumexarope.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/viluserid.pdf
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/16394626427.pdf
    • https://cdn.shopify.com/s/files/1/0437/4226/5498/files/tovevugugarikexiwu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3258/9989/files/jadadokiletuti.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/
    • https://cdn.shopify.com/s/files/1/0440/3258/9989

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fe2.bin
a393ddd29b68e81d9d942c0fe3337c631010fdc71b51d8e5f7601d058dbdc29f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 5176 bytes
font_01_sfnt_off0000817b.bin
2dd0e9d0a241cb291fd5a6ad7d28e56c1ec8a1424dd74af82f9cd3b2760c282f
pdf-font-stream PDF embedded font (sfnt) at offset 0x817B 9988 bytes