Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fbcbbb296f28790…

MALICIOUS

PDF

40.0 KB Created: 2020-04-02 08:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6bcee822e2fb67517db7cdc4d89e9b22 SHA-1: 4db5d06f82b328f7f9e250db75eed924ebb6e58d SHA-256: 1fbcbbb296f2879050073f52078a491163f9b1ce2c7472bcfa391c3f7bfb91b2
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to distribute malicious content. The document body, though partially corrupted, contains references to product parts and software versions, suggesting a lure to obscure the true malicious intent. The primary heuristic identified a link farm of 18 external PDF links hosted on rbkresearch.com, indicating a coordinated effort to redirect users. 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://audiofidelity.no/uploads/1/3/0/6/130604950/130604950.html#craftsman+17+inch+25cc+weed+wacker+parts
    • http://rbkresearch.com/uploads/1/3/0/8/130813654/fuvowomena.pdf
    • http://statewideautorecycling.com/uploads/1/3/0/6/130605238/3468757.pdf
    • http://dietsdecoded.info/uploads/1/3/1/4/131406239/9ba0c15f.pdf
    • http://polarfx.net/uploads/1/3/0/6/130604086/761533.pdf
    • http://frecuenciarockradio.com/uploads/1/3/0/5/130589246/5796232.pdf
    • http://lmafitness.net/uploads/1/3/1/0/131069915/812ae5a4c1c.pdf
    • http://ozziefood.com/uploads/1/3/0/5/130538986/5668428.pdf
    • http://kara.gmbh/uploads/1/3/0/7/130775837/1993389.pdf
    • http://terraniquelawnhomeservices.com/uploads/1/3/0/6/130621800/soreviw.pdf
    • http://parkingforu.org/uploads/1/3/0/6/130620300/mamometuv-nonunutorowi-bumafonuwo-letakabar.pdf
    • http://wecancenters.com/uploads/1/3/0/5/130546415/5c73e0e.pdf
    • http://qigonghouse.com/uploads/1/3/0/6/130640146/6901494.pdf
    • http://rightyourstoryinc.com/uploads/1/3/0/5/130539074/7207367.pdf
    • http://mysorebeppu.com/uploads/1/3/1/1/131164313/vetobutejubos.pdf
    • http://thepotisserie.org/uploads/1/3/1/4/131483069/piwoxilogu.pdf
    • http://melissaksims.com/uploads/1/3/0/6/130604371/f21827.pdf
    • http://mawilabs.com/uploads/1/3/1/3/131383548/folubof.pdf
    • http://ikhouvanlampegat.nl/uploads/1/3/0/5/130588346/sirolu.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_off00006fba.bin
cb3f2e9918606fc79209a6efe5e0d031da947699e0470648e47a46c36412b1ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBA 9216 bytes

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