Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fa0c55511bf709c…

MALICIOUS

PDF

46.7 KB Created: 2020-08-02 09:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8055d8175a82f11ed5980be3669af81 SHA-1: 60ab71494f5b307051de2d3eeef79fc8d7708b50 SHA-256: 3fa0c55511bf709cd94d54e9fb5b82c67708b945ec8a02374279415faa9a4816
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to external resources, which is indicative of a link farm or redirection scheme. One critical heuristic identified a link to a known malicious redirector, ttraff.com, suggesting a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the suspicious URL and references to 'Mirro pressure cooker', likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=mirro+pressure+cooker
    • http://files.lakesidelabradors.com/uploads/1/3/1/6/131606046/4538241.pdf
    • http://files.jazzbeyondborders.com/uploads/1/3/1/4/131408204/zivelezexumevik.pdf
    • http://files.catenazzilab.org/uploads/1/3/1/4/131406075/025aadc1d.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/13322229117.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/rurajemajodosup.pdf
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/43353378147.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/48722729825.pdf
    • https://cdn.shopify.com/s/files/1/0434/2461/2508/files/figifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/vasubuvowituvopew.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/nosafupomudivewegafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81143567733.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/rojoded.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/luxivenosunamadolituv.pdf
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/togujowuwitene.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_off00006c61.bin
a5fd34e60a7aedeffb1b160556fa6e2c8c1c44ff3d11ef8cd15ca84146424e5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C61 4452 bytes
font_01_sfnt_off00007b93.bin
0a5b3231737c66a85e5207cbcc9c55db8cc7885534843c7c692352bf5fc0c352		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B93 10800 bytes
font_02_sfnt_off0000a030.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA030 4324 bytes

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