Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db734aa3941a72c…

MALICIOUS

PDF

80.6 KB Authoring application: pstoedit
MD5: c524fe838d860b28f2ef56ad2f22b05f SHA-1: 37068d94ce02329acf14ba9eb2da53af96fae976 SHA-256: 1db734aa3941a72c0cff077cebc881bf5710b491587af69a9fcfec5babc6330b
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a large external link farm and a ClamAV detection for 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The embedded URLs suggest a phishing or SEO manipulation tactic, aiming to redirect users to numerous external PDF documents. No scripts were extracted, limiting the analysis of direct malicious actions beyond the redirection.

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://coronado.be/uploads/1/3/0/7/130739431/944342959.pdf
    • http://coleshill.com/uploads/1/3/0/2/130270917/169f6b193617.pdf
    • http://shineforfiveboutique.net/uploads/1/3/0/4/130483514/1267685.pdf
    • http://naturalisllc.net/uploads/1/3/0/7/130776322/tifetod.pdf
    • http://www.littleladycafe.com/uploads/1/3/0/5/130589072/sodituda.pdf
    • http://lexington-mls.com/uploads/1/3/0/5/130538922/6074876.pdf
    • http://www.brikonete-hfh55.com/uploads/1/3/0/4/130488100/satotufarar.pdf
    • http://www.cattailconstructionllc.com/uploads/1/3/0/4/130492315/relaguzufegis.pdf
    • http://peru.cctvradio.com/uploads/1/3/0/2/130289315/ruzekusegugijed-mitirilovapim-ruxizagi.pdf
    • http://thecheckupapp.com/uploads/1/3/0/7/130739162/podisatedud_jolifesito_ferotexaboxiwu_namubulun.pdf
    • http://maehrind.com/uploads/1/3/0/2/130270849/ac47a.pdf
    • http://marwaelkadi.com/uploads/1/3/0/6/130605258/fefewaladefaguw_tizidadas.pdf
    • http://silisite.com/uploads/1/3/0/9/130969917/5d04498b9dd2.pdf
    • http://mznaturallypatriciallc.com/uploads/1/3/0/8/130813913/wisopozejitutinug.pdf
    • http://beclaims.com/uploads/1/3/0/7/130739968/014ebb7ed418.pdf
    • http://www.finefarmingnc.com/uploads/1/3/0/4/130488244/xivug.pdf
    • http://old-waverley-full.devsite-1.com/uploads/1/3/0/7/130739947/130739947.html#what+is+the+use+of+relu+in+cnn
    • http://coleshill.com/uploads/1/3/0/2/130270917/169f6b19361

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000027e6.bin
4d15b8846b9527bc0bcdb4e3540a157f47c6343c6ad136457b52ff9769024b92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E6 16080 bytes
font_01_sfnt_off00003c51.bin
80cb4267586e88ef18c7ee2975e547fb7ea9ad587bc17c7d5de8ac6e377e77a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C51 3140 bytes
font_02_sfnt_off00004ac2.bin
6b9fea2c54b0eae24ea50b1de7e6a1817b4c9627328cf144cb0f1428f6fcba2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC2 9588 bytes

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