Malicious PDF — malware analysis report

Static analysis result for SHA-256 011dfad96dd9bd57…

MALICIOUS

PDF

40.3 KB Authoring application: Serif PagePlus
MD5: 41bbdd833f5d0011a102bb92cec51f0a SHA-1: 3b9fd4046422063b6f793cffb73a30f09673bf23 SHA-256: 011dfad96dd9bd5763174caec9bbd9e5e46a805cf91dfaa6bd7f7883336c83fa
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. These links point to other PDF files hosted on various domains, suggesting a link farm or a distribution mechanism for further malicious content. The ML classifier and ClamAV also flagged this file as malicious, reinforcing the suspicious nature of the embedded URLs.

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://naaboard.com/uploads/1/3/0/6/130640027/0a997.pdf
    • http://lostpupper.club/uploads/1/3/0/6/130639872/jogejijolaguxakut.pdf
    • http://cartiercouturee.com/uploads/1/3/0/6/130620372/penajugapovasewixoz.pdf
    • http://dgdiamondgalleria.com/uploads/1/3/0/5/130589064/46433243ac.pdf
    • http://newhavenmo.com/uploads/1/3/0/3/130323163/ae9b8dbbe79.pdf
    • http://premioscocacola.com/uploads/1/3/0/5/130589285/9d9c2a8dff8d.pdf
    • http://bobsbikes.net/uploads/1/3/0/6/130603882/8e92cae95f9.pdf
    • http://mksplumbingsocal.com/uploads/1/3/0/3/130379145/gajusuneni.pdf
    • http://easyaffiliaterevenue.com/uploads/1/3/0/7/130740055/zadakilolumeker.pdf
    • http://wearyourstate.com/uploads/1/3/0/8/130813399/bodesunufemekeke.pdf
    • http://lovellabridal.net/uploads/1/3/0/3/130379104/6dc767a574ad0.pdf
    • http://mrsmeltabargersclass.com/uploads/1/3/0/5/130543107/73ba80c1.pdf
    • http://equinemassagebysue.com/uploads/1/3/0/2/130289344/nowujig_genorawisuref_dinovol_zizuvowetuk.pdf
    • http://timeframingconsulting.com/uploads/1/3/0/2/130272474/130272474.html#zelda+breath+of+the+wild+map+fairy+fountain
    • 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_off00002de1.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE1 16036 bytes
font_01_sfnt_off00004506.bin
34f1892aed1131c37c675f69cb668de9ee449c18d2eda12e96d2bd485f84f43f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4506 7752 bytes

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