Malicious PDF — malware analysis report

Static analysis result for SHA-256 03397ff04062c9d0…

MALICIOUS

PDF

41.7 KB Authoring application: Poppler-utils
MD5: 16865342492d6a7a0fe83a5ac6921b25 SHA-1: fb6bb7f1ae5a70cd3f4b7b0513d7b5e20c33a35a SHA-256: 03397ff04062c9d0a4238c78279c511a540bc06eeaa38e81ff62b949881e2376
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files across various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or distribute a large volume of content, potentially malicious. The ML classifier and ClamAV detection further support its malicious nature, flagging it as phishing or a general malware threat.

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://afternooncatnap.com/uploads/1/3/0/6/130639155/zazujep.pdf
    • http://snowdonia-estateforsale.com/uploads/1/3/0/6/130639747/9b58396818b7.pdf
    • http://branchettastreasures.com/uploads/1/3/0/2/130292098/lidunidebipeki.pdf
    • http://nissanpatrolparts.com/uploads/1/3/0/3/130379243/kunulupijetij-xelaliwoxujesa-nipolix.pdf
    • http://sigmapivu.com/uploads/1/3/0/2/130289504/pomakelurabebigejot.pdf
    • http://cebuguam.org/uploads/1/3/0/8/130814286/c48edfdf806531.pdf
    • http://cumyum.org/uploads/1/3/0/6/130605216/7242652.pdf
    • http://didsburysmiles.com/uploads/1/3/0/7/130739542/sarakujojapotup.pdf
    • http://jonnyzero.net/uploads/1/3/0/4/130490585/libeluzuziwa.pdf
    • http://worldtopmodelandorra.com/uploads/1/3/0/4/130476075/mosizonaw.pdf
    • http://delbuck.com/uploads/1/3/0/5/130544938/goxogole.pdf
    • http://jackpassion.org/uploads/1/3/0/5/130550684/c7c99372abaa.pdf
    • http://possumworkz.net/uploads/1/3/0/5/130551864/cc0485b18.pdf
    • http://sveos.net/uploads/1/3/0/2/130288318/87623.pdf
    • http://babybirthcharts.com/uploads/1/3/0/6/130621814/51f9f939dc02e.pdf
    • http://autoconstructors.com/uploads/1/3/0/6/130639489/povenexubininotoge.pdf
    • http://sugarcoatedcc.com/uploads/1/3/0/6/130621909/zupikutejojofaxizu.pdf
    • http://www.fashionplus1.com/uploads/1/3/0/4/130483426/2356110.pdf
    • http://newmanstage.com/uploads/1/3/0/5/130540397/bepop_jesolide_kotavir.pdf
    • http://mikacollins.com/uploads/1/3/0/4/130489604/mipoku_vopasa.pdf
    • http://charmingworldtours.voyagerwebsites.com/uploads/1/3/0/4/130483769/130483769.html#difference+between+astrologer+and+astronomer

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042d2.bin
e818193f6d5f94b12e4298a0a16d028e9f95c93875e587f44ccf78e9236e27fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42D2 8312 bytes

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