Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca57a2601a26f868…

MALICIOUS

PDF

41.5 KB Authoring application: Scribus
MD5: fd9df04d70086a4ee08336a4a7a4a03f SHA-1: fdb5fe3fa0d4af372c09d2d896b04a3ce50ce055 SHA-256: ca57a2601a26f868bfc4429253586b541adfd17d56de3b7597dc1dc8df91131f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support its malicious nature. No scripts were extracted from this sample, but the structure strongly suggests a phishing or traffic-generation attack.

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.
  • 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://brown-sugar.com.au/uploads/1/3/0/4/130476074/naxozepepowap_lisogo.pdf
    • http://varliakademi.com/uploads/1/3/0/6/130620340/gexiludurovapif.pdf
    • http://realloveisunbreakable.org/uploads/1/3/0/2/130272509/dununifogakugejopuf.pdf
    • http://rotaract4100.org/uploads/1/3/0/5/130588936/gugef_lenuw_feteke.pdf
    • http://www.braveandgentle.com/uploads/1/3/0/2/130288506/kepepalol.pdf
    • http://bodikerconsulting.com/uploads/1/3/0/5/130545199/94ba34b.pdf
    • http://gestionwebfarmacia.com/uploads/1/3/0/2/130289638/2610729f.pdf
    • http://www.funfactorbooth.com/uploads/1/3/0/5/130590666/8b28c9a8.pdf
    • http://luxairecares.net/uploads/1/3/0/6/130620927/zoxux-gemifedopuzi-rubipikevi.pdf
    • http://drivesuperiorcarriers.com/uploads/1/3/0/5/130547999/2102749.pdf
    • http://merlotgroup.com/uploads/1/3/0/5/130546283/notake.pdf
    • http://www.marlindivecenter.com/uploads/1/3/0/2/130270912/konibolef-mavomatomewetor-fexabizuwi-gobixajan.pdf
    • http://snellerpianostudio.com/uploads/1/3/0/4/130490665/xipidedar_zimokojup_jefup_dobugan.pdf
    • http://mfautodetail.com/uploads/1/3/0/3/130323697/kufinizapapal-gojudobotoxu-belufalazotonux.pdf
    • http://karibalexander.com/uploads/1/3/0/6/130639504/ripewujon.pdf
    • http://74-123-76-193.mgwnet.com/uploads/1/3/0/6/130604855/130604855.html#efeitos+colaterais+dos+agonistas+beta+2+adrenergicos
    • http://merlotgroup.com/u

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003943.bin
e8d2acff96767f728aead9cdf9b70fb59902ae4d139d021ebf8e0accf5e349f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3943 2944 bytes
font_01_sfnt_off00004668.bin
828411f71bb096b271829d577c5f29a8f3291f47de9210ec7c024184fbc89c59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4668 9604 bytes

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