Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8c20d60c7995c8f…

MALICIOUS

PDF

38.9 KB Created: 2020-04-22 07:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a70c730ecf963e99cf1ae20f4f2ae843 SHA-1: 16c73d33349069857e0f9d47f5df0bf3024394d3 SHA-256: b8c20d60c7995c8f40c005939227beaf185becbddc4e10905a66525cf28b3d55
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a large number of external links, many pointing to other PDF files, suggesting a link farm for SEO manipulation or to host malicious content. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, consistent with callback phishing or tech-support scams. The embedded URLs likely lead to further stages of the attack or phishing pages.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://fortheloveofglutenfree.com/uploads/1/3/0/6/130639565/130639565.html#abacus+information+technology+solutions+llc
    • http://sapinrestaurant.com/uploads/1/3/1/3/131383746/nixozo-sawalutokagova.pdf
    • http://nataliarincon.mx/uploads/1/3/1/0/131070336/bf995a3b7afe6.pdf
    • http://your3eyes.org/uploads/1/3/0/5/130542907/dujanijuxub.pdf
    • http://livingstonlandclearing.com/uploads/1/3/1/4/131407406/waxid.pdf
    • http://collegefundingmagician.com/uploads/1/3/0/6/130620407/3e3bcd.pdf
    • http://weareradioband.com/uploads/1/3/0/6/130603763/soxatajosokawun_texizemini.pdf
    • http://fracturedoptics.com/uploads/1/3/0/5/130589416/dulovibev.pdf
    • http://armadanamedsound.com/uploads/1/3/0/7/130775364/vetodevose_sasona.pdf
    • http://realitysarcasmandshade.com/uploads/1/3/0/8/130813111/2144918.pdf
    • http://mrfartisans.com/uploads/1/3/0/6/130640032/sivaruxevazus.pdf
    • http://waterhallcollection.co.uk/uploads/1/3/0/6/130604498/8318410.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_off00006316.bin
c8b457fe13bc54a0cf7b32b187c8148ca2a342f98ce362186dd6a3aa93807bcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6316 8540 bytes
font_01_sfnt_off000083d2.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83D2 2652 bytes

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