Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf13eeb5ee6e6fb…

MALICIOUS

PDF

51.8 KB Created: 2020-03-21 21:12:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 05d19c2c6ae60f6330d69df95839896f SHA-1: 9696a2969f981acfebb6b4e340066f1cf7c9e2fe SHA-256: 9bf13eeb5ee6e6fb3771dab595be77fa54bcb54020077ce4e011970c691db9d0
92 Risk Score

Malware Insights

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

The PDF 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 manipulation tactic, which can be used to distribute malicious content or improve search engine rankings for malicious sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://seeking-hope.com/uploads/1/3/0/2/130287462/130287462.html#principales+musculos+huesos+y+articulaciones+del+cuerpo+humano
    • http://www.panaceamovil.com.co/uploads/1/3/0/3/130323602/xamulazu.pdf
    • http://theenchantedoakmi.com/uploads/1/3/0/7/130775851/fajazexidi.pdf
    • http://themountaintopjournal.com/uploads/1/3/0/7/130738484/4775925.pdf
    • http://artm.online/uploads/1/3/1/0/131070727/5263949.pdf
    • http://www.madisonsteakhouse.net/uploads/1/3/0/5/130551019/6437107.pdf
    • http://artbydelayne.com/uploads/1/3/0/5/130552084/e5171ffdf4.pdf
    • http://www.theforceoftruthministries.com/uploads/1/3/0/4/130488486/gevefowipudupo_mativukizin.pdf
    • http://carrieandandrew.com/uploads/1/3/0/8/130873994/8735369.pdf
    • http://www.williamchackett.com/uploads/1/3/0/5/130551210/34e5918.pdf
    • http://solosgroup.net/uploads/1/3/0/5/130539457/447380.pdf
    • http://webmail.dantedesigngallery.com/uploads/1/3/0/2/130287456/d74cfaa0e7.pdf
    • http://cactussac.com/uploads/1/3/0/4/130483617/disufok-lozudesow-sonefusitalav-wokoranufojamav.pdf
    • http://matalawncare.com/uploads/1/3/0/7/130740116/miwul.pdf
    • http://routinesaints.com/uploads/1/3/0/2/130289738/momagujukuge_tiwimuru.pdf
    • http://mylastduchess.net/uploads/1/3/0/6/130639026/difazizewez.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_off00009ff2.bin
f7721ebd703f21716ca6aebc65d61f548b082df4ec3e0c47afa8ba08a4ee1e10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF2 8484 bytes

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