Malicious PDF — malware analysis report

Static analysis result for SHA-256 83daf8a97cf60ed0…

MALICIOUS

PDF

37.4 KB Created: 2020-04-01 17:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9c2dbd5d33c6216515fae2f6c02753ae SHA-1: f2ebf56e2f7ebd0030b5674e4b22929f175e8766 SHA-256: 83daf8a97cf60ed04f330cb1230cead13517266a78bbacd9a22c3705b2f44248
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though partially corrupted, suggests a lure related to language learning materials. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the extensive link farm points to a delivery mechanism for further malicious content.

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://goodsolidhomes.net/uploads/1/3/0/9/130969631/130969631.html#schritte+international+neu+a2+1+h%C3%B6ren
    • http://mhs-volleyball.com/uploads/1/3/0/8/130874018/365511.pdf
    • http://unikcoarquitectos.com/uploads/1/3/0/7/130775435/7361131.pdf
    • http://triggerhappyco.com/uploads/1/3/0/7/130775219/1996259.pdf
    • http://myseasponge.com/uploads/1/3/0/2/130289319/dakagunisepeza-lesomireviseza.pdf
    • http://epoxycreativefloors.com/uploads/1/3/0/8/130874569/388340.pdf
    • http://mcgeeautomation.com/uploads/1/3/0/4/130435631/tejisiz.pdf
    • http://tlcrtransporteslogisticos.com/uploads/1/3/1/3/131383228/tubat.pdf
    • http://katiesellscastles.com/uploads/1/3/0/4/130476359/noduvo.pdf
    • http://retail-row.com/uploads/1/3/0/4/130488414/mivedagunuwuve_bezago_zasinewajuximuk.pdf
    • http://fastclosinghomes.com/uploads/1/3/0/5/130550911/4002547.pdf
    • http://grapheneproject.net/uploads/1/3/0/9/130969891/4310610.pdf
    • http://farmwifelifend.com/uploads/1/3/1/4/131407705/sowemapenoz_vobigemojerunu.pdf
    • http://bravohobby.com/uploads/1/3/0/6/130604109/897054.pdf
    • http://coachsspearsspeaks.org/uploads/1/3/0/5/130590235/dbcb5458f0.pdf
    • http://nikkimannion.com/uploads/1/3/0/8/130874035/7140773.pdf
    • http://aquariusdriving.com/uploads/1/3/1/1/131164552/2584071.pdf
    • http://selljaxbeach.com/uploads/1/3/0/7/130739146/d6db85849f.pdf
    • http://campdejourhockeydemortagne.com/uploads/1/3/0/6/130603994/76ed76536f.pdf
    • http://aelberspersoneel.net/uploads/1/3/0/7/130776249/6006390.pdf
    • http://ksginc.net/uploads/1/3/0/7/130774972/76e041d53e8ced.pdf
    • http://squashthis.org/uploads/1/3/0/5/130543468/megodetodobezokego.pdf
    • http://warriormumandbaby.com/uploads/1/3/0/6/130604366/kukopeg.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_off00006639.bin
4e41b03da7ea0bb5a9e212aa3f08eb1e018a10e78048d2443845d376c2dfa331		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6639 8392 bytes

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