Malicious PDF — malware analysis report

Static analysis result for SHA-256 decb5e8fb5bd5a1e…

MALICIOUS

PDF

35.8 KB Authoring application: OpenOffice.org
MD5: d5b7ea8cfaa420ef32d8f24e6116c4b5 SHA-1: 7f3ac47710140375ce4a27c465f81e05300f79a5 SHA-256: decb5e8fb5bd5a1eef924f6369585944714e30fc08bbca97a7704c700b7953c6
150 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs suggest a phishing or content distribution campaign.

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://mi6app.com/uploads/1/3/0/3/130324050/243ea4597.pdf
    • http://wellmaybllc.com/uploads/1/3/0/7/130776786/kovefijukafi-jidawegof-fidedufe-napak.pdf
    • http://grapheinsarl.net/uploads/1/3/0/8/130873833/xobuminubadugi.pdf
    • http://wealthystinsurance.com/uploads/1/3/0/7/130739326/5844ef.pdf
    • http://purposedplatform.net/uploads/1/3/0/5/130551311/nebuberuzepi.pdf
    • http://adiosdebt.com/uploads/1/3/0/4/130436141/pizimugelarag.pdf
    • http://carnoire.com/uploads/1/3/0/7/130775884/f683a.pdf
    • http://shogiforum.net/uploads/1/3/0/5/130551266/jagulidoribu.pdf
    • http://pbjlightsandsound.com/uploads/1/3/0/7/130776017/3954146.pdf
    • http://severedthumbsart.com/uploads/1/3/0/2/130289776/083da37.pdf
    • http://quakestudentconferences.net/uploads/1/3/0/5/130589297/6177445.pdf
    • http://simplyexquisitehg.com/uploads/1/3/0/7/130776483/f4272a0394cd8.pdf
    • http://www.peakathleticsystems.com/uploads/1/3/0/9/130969532/130969532.html#adductor+brevis+strain+diagnosis
    • http://adiosdebt.com/uploads/1/3/0/4/130436141/p

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003388.bin
68160f0dc3f480a9079857ac0e33f4d15f55cda83f97183cebbd6d712831ab3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3388 8204 bytes

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