Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bf846e93ee7b7bc…

MALICIOUS

PDF

45.8 KB Authoring application: SWFTools
MD5: 2bdd3c8aef85aabb723cbeaa6f92dff3 SHA-1: a41a0cf0b972be64a3e46f26d8f19100c1538543 SHA-256: 0bf846e93ee7b7bcef7fcaafbd638655de8f570022a2675b7ce01027f7359473
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the embedded URLs suggest a mechanism for delivering further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://nowhikethis.com/uploads/1/3/0/4/130490719/jinadotiput_jabitokipakorov.pdf
    • http://leveluplab.com/uploads/1/3/0/8/130813592/5455885.pdf
    • http://newearthwarrior.org/uploads/1/3/0/5/130541384/netulugadufuras.pdf
    • http://petsitteratlarge.com/uploads/1/3/0/3/130379361/6793655.pdf
    • http://josephdefeo.net/uploads/1/3/0/6/130604887/8717887.pdf
    • http://cbbankclassic.com/uploads/1/3/0/8/130813948/vebito-pebux-xosib.pdf
    • http://cluesescaperoom.com/uploads/1/3/0/5/130550785/212fb33760cb.pdf
    • http://onestoneworks.com/uploads/1/3/0/6/130604305/d81ef531b2e879.pdf
    • http://nonakaconsulting.com/uploads/1/3/0/7/130740465/nuvubijogomuri.pdf
    • http://abitoflace.com/uploads/1/3/0/8/130814346/8916fd552db073.pdf
    • http://k7yulechengttyulecheng.br3h.com/uploads/1/3/0/6/130620776/jugafeworagape_gikexe.pdf
    • http://dorsetponds.com/uploads/1/3/0/5/130590257/gisododulapipopupofu.pdf
    • http://amandawoodshall.com/uploads/1/3/0/6/130621457/rorib_rojeduwulodepif_zajobuz.pdf
    • http://coffeewithfriends.ca/uploads/1/3/0/7/130739732/2666181.pdf
    • http://kimleephotography.net/uploads/1/3/0/6/130604833/pasali-wuzigisip.pdf
    • http://gotmonks.net/uploads/1/3/0/4/130488569/1bd05fa49.pdf
    • http://carlydairy.com/uploads/1/3/0/5/130544191/3051121.pdf
    • http://sarahvermette.ca/uploads/1/3/0/7/130775347/4919220.pdf
    • http://callanjames.co.nz/uploads/1/3/0/2/130289265/47aa774dd0f.pdf
    • http://nkz.brdge.org/uploads/1/3/0/2/130271028/130271028.html#musculo+aductor+mayor+ubicacion
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000038e0.bin
b773b3e89f875699a7836d11f9f978c74f2469b6727e3b41cf1560d54bd697cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38E0 17116 bytes
font_01_sfnt_off00005346.bin
e46db63d16129c800fb49693f71045fc76c54c467beb9e958b094efcc64ee5c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5346 8968 bytes

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