Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6d2d1d2cf1620b…

MALICIOUS

PDF

40.3 KB Created: 2020-08-09 19:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48ec7eba077ce123f16c6ac8ead7b3d2 SHA-1: 30165dafa515f114dc1dc075410164fbff3b96c2 SHA-256: 8c6d2d1d2cf1620b4b1799882efb6e7b63bda4cec3a4cc86d907a76c8b6af3aa
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also hosts a large number of external links, suggesting a link farm for SEO manipulation, as flagged by PDF_SEO_LINK_FARM. The document body, though partially corrupted, contains the URL that triggers the malicious redirector. 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.com/pify?keyword=zygomatic+implants+the+anatomy+guided+approach+pdf
    • http://jipima.techinfinityconsulting.com/uploads/1/3/1/6/131637016/gazapibipi.pdf
    • http://files.equestrianeliteatapplejackfarm.com/uploads/1/3/0/7/130775784/dubamab-giwolego-zezeji-besexabudu.pdf
    • http://files.sanfranrevelstoke.org/uploads/1/3/1/6/131636758/c81eb1a70.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/bewolajagexuvezozeluniviv.pdf
    • https://cdn.shopify.com/s/files/1/0428/7257/0012/files/5794058502.pdf
    • https://cdn.shopify.com/s/files/1/0435/1721/4874/files/22476381402.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/74103855574.pdf
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/bihar_stet_question_paper.pdf
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/32873651413.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dekafarisajanitid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdf
    • https://cdn.shopify.com/s/files/1/0436/9845/4682/files/nidini.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_off00005c67.bin
2c4ad0041712f6a10add6d3792eab7f3e4c0545a4fad2153b61ca72c6ee4d609		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C67 5628 bytes
font_01_sfnt_off00006f6d.bin
a14e5faab51fec59c8e3bdb527bbd8bf91887a9bcb357886ef7261bce327acf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6D 10900 bytes

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