Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e97fbb274d2b88c…

MALICIOUS

PDF

33.8 KB Created: 2020-03-15 03:25:08 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0732343d772f77129b93157e80ca86a6 SHA-1: 6bf4323cd64af92e656183a25338665345742c0f SHA-256: 8e97fbb274d2b88c515efbdb64a5d5255dd65bb86d4b3f3a3c9f0abf89c798cc
92 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, many of which point to similarly structured URLs. The document body text, while partially obfuscated, includes a search query related to cheap Android phones, suggesting a lure to a link farm designed to drive traffic to potentially malicious or ad-filled websites. The ML classifier strongly supports the malicious nature of this PDF.

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://5azdic.salon225.com/uploads/1/3/0/2/130274315/130274315.html#telefonos+android+baratos+mercadolibre
    • http://ageniart.com.au/uploads/1/3/0/2/130273584/5252815.pdf
    • http://thriveandnourish.com/uploads/1/3/0/8/130873894/4963783.pdf
    • http://www.stewarthealthresourcesolutions.com/uploads/1/3/0/5/130545278/fanevi-vofut-vejuven.pdf
    • http://difficultrunponyclub.org/uploads/1/3/0/5/130590457/3615546.pdf
    • http://superselections.net/uploads/1/3/0/6/130640183/5363264.pdf
    • http://netmassive.net/uploads/1/3/0/5/130550874/pevuxe.pdf
    • http://yourmateapparel.com/uploads/1/3/0/4/130476984/vojijofenipexox.pdf
    • http://quirk.solutions/uploads/1/3/0/2/130272250/9163252.pdf
    • http://www.catholicchurchofantioch.net/uploads/1/3/0/5/130540134/tuzab.pdf
    • http://creationsbyclaudia.com/uploads/1/3/0/5/130589435/rimutinegeje.pdf
    • http://www.chlaudit.com/uploads/1/3/0/7/130776298/xunokedo.pdf
    • http://contractorwholesale.com/uploads/1/3/0/6/130639811/satuz.pdf
    • http://texasconstructionpro.com/uploads/1/3/0/5/130590682/2ac5485c25e.pdf
    • http://igniteyourinnerhero.com/uploads/1/3/0/6/130621317/2047771.pdf
    • http://beadsbytrokon.com/uploads/1/3/0/6/130621044/jotodige.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_off00005b47.bin
40164cd42c0ae692bb038afa0ce92e6643cb39707c8a6d6caf0702d2e8fa05ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B47 7648 bytes

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