Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d5b05be597b3aa3…

MALICIOUS

PDF

36.3 KB Created: 2020-04-05 12:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7a09368254ee5aa1854583cba559c0d4 SHA-1: 25af4fe4943d8e49312a05f256effae7baec7a3b SHA-256: 8d5b05be597b3aa39cd087500b8112801b5e704cd24cbb23e1e89783cda10fc6
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, a common technique for SEO poisoning and driving traffic to malicious sites. The document body, though heavily obfuscated, contains references to computer hardware specifications and URLs that appear to be part of a link farm. The primary lure seems to be disguised as technical specifications, directing users to potentially malicious content.

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://datanetguatemala.com/uploads/1/3/0/5/130551604/130551604.html#acer+aspire+v5-431+series+specs
    • http://soundscapist.com/uploads/1/3/0/6/130620750/6196022.pdf
    • http://tulsapropertycenter.com/uploads/1/3/0/2/130289338/vurigapes.pdf
    • http://dayvdoberne.com/uploads/1/3/0/8/130873824/4501217.pdf
    • http://proverbs31boutique.com/uploads/1/3/0/4/130435937/9983660.pdf
    • http://muziekkapel.be/uploads/1/3/1/4/131406695/dugirixaguderov.pdf
    • http://gcsouthstarllc.com/uploads/1/3/0/5/130539696/137a703.pdf
    • http://liveoncenter.com/uploads/1/3/0/4/130476814/3060489.pdf
    • http://thehappycouple.org/uploads/1/3/0/2/130288318/17201b0b.pdf
    • http://472-476thomas.com/uploads/1/3/0/2/130291658/zedode.pdf
    • http://maestrosmusic.org/uploads/1/3/1/4/131452941/df5c06c34.pdf
    • http://396secondst.com/uploads/1/3/0/5/130589168/7602436.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_off0000671d.bin
c8514852824e90b9aaff3fad8d749195c1eed4c961990dd3a004b99b7e51a176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671D 7456 bytes

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