Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ca3a61c7d0ae6d1…

MALICIOUS

PDF

43.8 KB Created: 2020-03-09 08:43:17 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 44fed043d54e513d3b74ffd0af7236dc SHA-1: ae48a96d2ba140b1a0da0fc7ccdb669a5ee5b6d6 SHA-256: 3ca3a61c7d0ae6d15f50da4e93db254d4325e12867c4197e5dd63e2a1955b07f
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, disguised under a seemingly innocuous title related to ukulele songs. The heuristic 'PDF_SEO_LINK_FARM' indicates this is a technique to generate traffic or distribute content across many domains. The primary URL points to an HTML file, while most others point to PDF files, suggesting a link farm or redirection scheme. 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://bmplogistics.com/uploads/1/3/0/6/130604730/130604730.html#top+ukulele+songs+2019
    • http://kikibars.com/uploads/1/3/0/7/130739875/764849.pdf
    • http://avanainsurance.com/uploads/1/3/0/5/130541065/gizazalujamukadob.pdf
    • http://jesusonprophecy.org/uploads/1/3/0/5/130588839/witobujobupa.pdf
    • http://beckykirsch.com/uploads/1/3/0/7/130775387/xovexamakorege.pdf
    • http://mail.lechiro.info/uploads/1/3/0/6/130640059/roboviridado.pdf
    • http://verbouwformule.com/uploads/1/3/0/2/130287867/sirikijumikoxaz-pokoki-mepizelu-vazadukobi.pdf
    • http://www.claudiabrenlla.com/uploads/1/3/0/8/130874077/c4899405c.pdf
    • http://www.edwardarchitectureportfolio.com/uploads/1/3/0/6/130621557/wuralujelosi.pdf
    • http://mta-sts.mx0.probst-marketing.de/uploads/1/3/0/3/130323952/wutozedag.pdf
    • http://kglabruyere.com/uploads/1/3/0/7/130738505/5860378.pdf
    • http://www.heptagonc.com/uploads/1/3/0/6/130621441/rijukodake.pdf
    • http://showupshutupandwrite.com/uploads/1/3/0/4/130489090/mawujuxetidob_sodefifinewipo_xoginupasetibif.pdf
    • http://laurentaylorco.com/uploads/1/3/0/3/130379098/gugexigelus.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_off000085d0.bin
9f6d193a19db640d0f6aa0451fcd055d0f4cf06d01600d656ce32ca08e689f0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85D0 7244 bytes

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