Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e85d68d7afb4bd2…

MALICIOUS

PDF

33.2 KB Created: 2020-04-11 08:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9d4a0cfe936a84c4c33d61e1f61ae087 SHA-1: 43519db42906371f3a692d32265a0fd517437695 SHA-256: 9e85d68d7afb4bd2cda1043d67737f4119fd2c635e600f7a615af7946bcfbb32
92 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous external URLs pointing to other PDF files. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is a tactic to distribute malicious content or engage in SEO manipulation. The presence of a URL related to 'lenovo synaptics touchpad driver windows 10' in the document body indicates a potential lure to trick users into downloading malware disguised as legitimate drivers.

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://74-123-76-231.mgwnet.com/uploads/1/3/0/6/130621401/130621401.html#lenovo+synaptics+touchpad+driver+windows+10
    • http://mylevifamily.com/uploads/1/3/0/8/130874681/bb40f17568a.pdf
    • http://megantheschoolcounselor.com/uploads/1/3/0/7/130739766/5eb26d5df76bd.pdf
    • http://hostmaster.richteaprojects.co.uk/uploads/1/3/0/2/130272260/zefiwolun_fomebeluj_rudamexujar.pdf
    • http://008llc.com/uploads/1/3/0/7/130738890/4360343.pdf
    • http://swussports.com/uploads/1/3/0/7/130739162/1013115.pdf
    • http://ciescreations.org/uploads/1/3/1/4/131406970/xafok-mefigusu.pdf
    • http://chinovalleylodge427.com/uploads/1/3/0/5/130544303/nakit.pdf
    • http://cuoij.com/uploads/1/3/0/4/130476141/mafovujix_gufupadoza.pdf
    • http://maxwellpeterson.com/uploads/1/3/0/2/130270911/31841fbea7d0.pdf
    • http://vicandjotea.co/uploads/1/3/0/5/130588954/4250027.pdf
    • http://awaytravel17.com/uploads/1/3/1/4/131409884/monifuzifejaguvizune.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_off00005832.bin
9cc612481d7afc4d505413c7f92fbdcd07093b1dc780f00c704c7dfecf0121b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5832 7856 bytes

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