Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c7b199afd3b833…

MALICIOUS

PDF

42.6 KB Created: 2020-06-18 10:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fd84e16da2f345d2b9a3dd1ed0b98b6 SHA-1: 9e7aa2bb9210b00eacfd5e956b332d6959c9cf7c SHA-256: 94c7b199afd3b8336ace0473fbeba08b09750d1edd04e36d5ce7ba2482f67b32
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to malicious sites or distribute further malware. No scripts were extracted, and the document body was heavily obfuscated, limiting deeper analysis of the immediate payload.

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://3i6.undesirable.us/uploads/1/3/0/7/130776069/130776069.html#smithsonian+field+guide+to+the+birds+of+north+america
    • http://scottpec.us/uploads/1/3/1/3/131380550/9a0d9445e362.pdf
    • http://bobcoconut.com/uploads/1/3/0/9/130969600/jodagu-gukovefoz-jenixe-fimap.pdf
    • http://rbc.consulting/uploads/1/3/0/6/130639504/nixomitivupefuw.pdf
    • http://wodscorecard.com/uploads/1/3/0/2/130288316/5663664.pdf
    • http://jewelrylady.shop/uploads/1/3/0/8/130873708/worapa-wusidizo-zepapovisijumat.pdf
    • http://sourboss.com/uploads/1/3/1/0/131070526/3022827.pdf
    • http://lscilumina.com/uploads/1/3/0/4/130435712/jimifuw-kusodej.pdf
    • http://3zu.undesirable.us/uploads/1/3/1/3/131398378/punuzugaxapesobox.pdf
    • http://sabahraphaelreed.com/uploads/1/3/0/8/130874108/lumodifunisaxaxoxafi.pdf
    • http://oxensal.com/uploads/1/3/0/6/130620459/fee62.pdf
    • http://jinwonhanglass.com/uploads/1/3/0/2/130291971/853d96f99.pdf
    • http://74-123-79-170.mgwnet.com/uploads/1/3/1/6/131606065/kunibakogefasizori.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_off00006901.bin
cb72cb222cf7d7e5cc1e32f7010a0f4902e688bc0dedc042b32d27f147bb9814		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6901 5560 bytes
font_01_sfnt_off00007bb2.bin
3fe71bdf548f847de87dc33e259a65ac4d21a07ec2fdc4f36d7fc9cee0afe7f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB2 10076 bytes

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