Malicious PDF — malware analysis report

Static analysis result for SHA-256 20631a1ed57a8763…

MALICIOUS

PDF

39.0 KB Created: 2020-04-09 11:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 698d4a0fb6740b91227b6f0ed21a64bb SHA-1: 3c9af19b8ae4008934dca8dab78def7f3a852974 SHA-256: 20631a1ed57a87637fa7c4fee8367ec3527a3915bc3f6a19392be17c05d2a83a
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution network designed to obscure the ultimate malicious payload. The document body itself is largely unreadable, but the presence of numerous external links strongly suggests a malicious intent to redirect the user. No scripts were extracted from this sample.

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://my-battalion.com/uploads/1/3/0/5/130588426/130588426.html#como+combinar+3+graficos+en+excel
    • http://dennisanddanielle.com/uploads/1/3/1/3/131384492/1944280.pdf
    • http://eedesignsboutique.com/uploads/1/3/0/6/130639590/kozanewa.pdf
    • http://jeanniewarnke.com/uploads/1/3/0/4/130476078/wekelevotiguwagu.pdf
    • http://reynoldsinspectionsllc.com/uploads/1/3/0/9/130969679/fapikejabuf.pdf
    • http://mj2startups.com/uploads/1/3/1/4/131406807/306e4632bb.pdf
    • http://thedollhouse69.com/uploads/1/3/0/5/130590467/pejuve.pdf
    • http://karissabrynn.com/uploads/1/3/0/5/130590656/5446895.pdf
    • http://hiltoncarsales.com/uploads/1/3/0/6/130621130/finafixad.pdf
    • http://institutefortherapeutictouch.com/uploads/1/3/0/5/130588256/xisulika.pdf
    • http://dotradio.org/uploads/1/3/0/2/130271023/keludatupokipa.pdf
    • http://midlandsallstar.com/uploads/1/3/0/5/130589137/wavivuxo-tuwaf-xotelukopot.pdf
    • http://hudsonvalleymemoir.com/uploads/1/3/0/2/130287445/4823470.pdf
    • http://kirkplayers.com/uploads/1/3/0/5/130551696/c80be.pdf
    • http://brpdllc.com/uploads/1/3/1/4/131438809/7579255.pdf
    • http://complitec.ch/uploads/1/3/1/4/131484395/0eef0.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_off00006e18.bin
6c01e7e3d40495d7a04166ed3e5c66a0f4929a5cd9710d4e283a1b85f6998a74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E18 9296 bytes

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