Malicious PDF — malware analysis report

Static analysis result for SHA-256 9faee5231095daa0…

MALICIOUS

PDF

40.6 KB Created: 2020-04-07 02:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 621aad4cd6401e5feb828e5ed1b9f9b3 SHA-1: ec7cc16fc11b61c1d86a0d39c0da4d9a06bd14bd SHA-256: 9faee5231095daa09c7681af28e2be5622cd1cc34b9b272215d60a4873a79139
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential attempt to distribute or host harmful content. No scripts were extracted from this sample, limiting the ability to determine further payload delivery or execution mechanisms.

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://christinafriedle.org/uploads/1/3/0/4/130476161/130476161.html#angulos+rectos+obtusos+agudos
    • http://b52farms.com/uploads/1/3/1/4/131409574/kiniwulegatogezana.pdf
    • http://axionws.com/uploads/1/3/1/3/131379830/mobasubataxijetiwo.pdf
    • http://sotabailbonds.com/uploads/1/3/0/6/130639655/3970566.pdf
    • http://thecollegechat.com/uploads/1/3/1/4/131407274/lokuruzi_javovokutil.pdf
    • http://ilmavetu.com/uploads/1/3/1/3/131379478/wezawipim-fagaj-vigabobogugur.pdf
    • http://refi-llc.net/uploads/1/3/0/3/130323406/wofuxe.pdf
    • http://punchlistexpress.com/uploads/1/3/1/0/131070227/ligimitetifen-rusupawezamewut-lunarobut-famipabup.pdf
    • http://fredstrebeigh.com/uploads/1/3/0/5/130539109/060402f.pdf
    • http://snowmanbump.com/uploads/1/3/0/5/130545565/9103743.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_off00006767.bin
4d328e1dcd42591f6892b4f863684c095d824c27eaa630d84e0d9c97c6708465		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6767 9072 bytes
font_01_sfnt_off00008859.bin
27d34f505be5448cf81551f5970d3234e06bbf895f045daf3b99d66306fb46dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8859 3360 bytes

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