Malicious PDF — malware analysis report

Static analysis result for SHA-256 30bb02565b203a20…

MALICIOUS

PDF

29.8 KB Created: 2020-04-29 07:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 02cc8e5126df9d758fbe38a91b544b13 SHA-1: 3625dc62de58ef0e056f2f18801089d0e94ed3bf SHA-256: 30bb02565b203a20805c5f511c9450a750112b7a5a3719a4d3c20679ccfeb552
92 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm designed to manipulate search engine results or distribute further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was largely unreadable, but the presence of numerous external links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://galatians5k.com/uploads/1/3/1/0/131070705/131070705.html#anker+powerhouse+200+manual
    • http://thelighterlamp.com/uploads/1/3/1/4/131438142/ditesasenofo.pdf
    • http://bluechairvintage.com/uploads/1/3/0/4/130436236/sofonupudu.pdf
    • http://theofficialdaw.com/uploads/1/3/1/3/131380011/bba8e940bd.pdf
    • http://towerviewsuites.com/uploads/1/3/1/1/131164112/lapanigaxuxawimoviw.pdf
    • http://mirrorhair.com/uploads/1/3/0/5/130551517/vedidigixamuges.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_off00005095.bin
009ae827264e200e1670c56b9c04edb8eb27cdadf28bf0e0e57e64bc2d3482bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5095 6816 bytes

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