Malicious PDF — malware analysis report

Static analysis result for SHA-256 54773038d9e56f35…

MALICIOUS

PDF

39.3 KB Created: 2020-03-29 05:26:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4f43574c9e30721db1f3d2bbec863421 SHA-1: c807e8e35fe95afb7aec106c909ece7814872344 SHA-256: 54773038d9e56f35de4abfc57d4181bdf80107e00c00ff0ef886610e1ba36908
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files on similar domains. This behavior is indicative of a link farm or SEO manipulation tactic, often used to distribute malicious content or for phishing. The document body, though partially corrupted, contains text related to medical treatments, likely serving as a lure to attract clicks on the embedded links. No scripts were extracted, and the primary malicious activity observed is the mass linking to external resources.

Heuristics 3

  • 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.
  • 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://northernrailleaders.com/uploads/1/3/0/8/130874326/130874326.html#vendaje+neuromuscular+para+fascitis+plantar
    • http://rockyworld.com/uploads/1/3/0/7/130776647/lukexig.pdf
    • http://castelgaillard.co.uk/uploads/1/3/0/8/130815726/6602056.pdf
    • http://supoaklandstreetfood.com/uploads/1/3/0/5/130588426/kifife.pdf
    • http://cafesewcrafty.com/uploads/1/3/0/7/130776063/witekamozikomi.pdf
    • http://ryvenhair.com/uploads/1/3/0/7/130775027/zevexume.pdf
    • http://honeybearorchards.com/uploads/1/3/0/7/130775962/tivewoxur.pdf
    • http://alcee.org/uploads/1/3/0/6/130639661/9577597.pdf
    • http://espiha.com/uploads/1/3/0/3/130313170/3842831.pdf
    • http://lebaijiayulecheng.br3h.com/uploads/1/3/0/7/130775658/zatoni.pdf
    • http://www.daydreamhemp.com/uploads/1/3/0/6/130639542/matapavixixunemube.pdf
    • http://totahr.com/uploads/1/3/0/5/130550722/4e2ae64682.pdf
    • http://mylegacyprofile.com/uploads/1/3/0/9/130969032/fuvini.pdf
    • http://duty.af/uploads/1/3/0/8/130814290/jiwusi.pdf
    • http://jmandyam.com/uploads/1/3/0/8/130814873/0ecedb41.pdf
    • http://rnlkozmetik.com/uploads/1/3/0/4/130483606/8538042.pdf
    • http://nicholslawpdx.com/uploads/1/3/0/6/130605125/dagupufanu.pdf
    • http://teenage-suicide.net/uploads/1/3/0/8/130813896/dowobetu-fukinaseg-jikekezelesazo-piwuwusi.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000701c.bin
a1a6dad39dcad373020d664e4b4836fbb9eb4e5b7634b20f12c5333cd2341ce1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x701C 8184 bytes

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