Malicious PDF — malware analysis report

Static analysis result for SHA-256 f801a5b3893ee80d…

MALICIOUS

PDF

44.9 KB Created: 2020-03-18 03:44:20 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9a0f7bad41bdce36b0b904daebfbbd2d SHA-1: 8b6a5b068a4327bb4aa6928b75fc7556d9d0ad83 SHA-256: f801a5b3893ee80dd1b16826b976c25ba865663644ddf076aaef34dc8f2ecd6b
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique commonly used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. The primary attack pattern involves directing users to a vast collection of other PDF files hosted across numerous domains, likely as part of a link farm or to distribute further malware.

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://the-whole-thing.com/uploads/1/3/1/0/131070590/131070590.html#metaphors+of+sight+and+blindness+in+oedipus+rex
    • http://74-123-77-163.mgwnet.com/uploads/1/3/0/3/130323116/filuxez-mesageba.pdf
    • http://wppsa.com/uploads/1/3/0/6/130621815/saxok_dafebuzute.pdf
    • http://hostmaster.videoworkcase.org/uploads/1/3/0/5/130551166/a8062307.pdf
    • http://repairbilldefense.com/uploads/1/3/0/6/130621000/8279954.pdf
    • http://cmifamily.com/uploads/1/3/0/5/130551809/1126872.pdf
    • http://elan.voyagerwebsites.com/uploads/1/3/0/4/130476200/98bf332051ec4c.pdf
    • http://yardpick.com/uploads/1/3/0/3/130379610/laveg.pdf
    • http://blushaestheticsnc.com/uploads/1/3/0/4/130478709/cea12528af4.pdf
    • http://redcliffsmoke.com/uploads/1/3/0/2/130272804/9838255.pdf
    • http://dreammakersta.com/uploads/1/3/0/2/130288545/vezofoxikiwulo-zipasu.pdf
    • http://imagozoi.com/uploads/1/3/0/2/130289154/801413.pdf
    • http://totemfaunaandflora.com/uploads/1/3/0/7/130776490/jigewok_petoj_kanexirad.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_off000086b1.bin
3b34b155dec800e807817cacb9266b73465f0648021ba901ba4ca3bef5911f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86B1 8268 bytes

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