Malicious PDF — malware analysis report

Static analysis result for SHA-256 4102b32c9e0ba107…

MALICIOUS

PDF

41.9 KB Created: 2020-08-19 18:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ec929149bb0e23441b718f8ff88ae12 SHA-1: 101dd7ca6580b32503d51a063a8074d8560db37f SHA-256: 4102b32c9e0ba1072e76a2dd2683dec86626a8c634a51d36c861a4e886d41bd3
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is part of a link farm designed to lure users. The document body, though partially corrupted, contains text referencing a "Terabyte wifi adapter installation guide" and the malicious URL, suggesting a social engineering pretext to trick users into clicking the link. No scripts were extracted from this sample.

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=terabyte+wifi+adapter+installation+guide
    • http://files.elevenothreeclothing.com/uploads/1/3/2/6/132681992/6468215.pdf
    • https://cdn.shopify.com/s/files/1/0430/0190/5315/files/79012791049.pdf
    • https://cdn.shopify.com/s/files/1/0432/6617/9230/files/97460498405.pdf
    • https://cdn.shopify.com/s/files/1/0438/5911/6182/files/critical_discourse_analysis_dissertation.pdf
    • https://cdn.shopify.com/s/files/1/0431/6699/0498/files/wonaxiliwevag.pdf
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/gunolefazalekuzejajit.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/29317881693.pdf
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/80227623431.pdf
    • https://cdn.shopify.com/s/files/1/0436/9973/2634/files/gepejatodej.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059ed.bin
1e707003e591fc6e2fcfb29299cc544ac421863e692cf68f39ea6716d23e95b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59ED 5492 bytes
font_01_sfnt_off00006cb2.bin
b18c4350770db6188fb8a15c7fcb91130ffad561a7b40f79a97f46e639d33f4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB2 2476 bytes
font_02_sfnt_off00007780.bin
6b74e8b2543f7362064d8c6cfc07772e1de662a3c8ee45f4035ef09535363b16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7780 10292 bytes

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