Malicious PDF — malware analysis report

Static analysis result for SHA-256 0591147b310259f2…

MALICIOUS

PDF

34.4 KB Authoring application: Mobipocket Creator
MD5: 2ac5dd58e28071ff1293e5ef5bdfda06 SHA-1: 92e22888203c594d0908939a08a0ecc39cd11707 SHA-256: 0591147b310259f2840b2f5c737b3a69eeb0737da4d6ade404b771ccdd2fff30
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified 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 detection strongly indicate malicious intent, specifically related to phishing.

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://www.startlanstore.com/uploads/1/3/0/8/130814559/zasesuvosedok.pdf
    • http://thedesigndevil.com/uploads/1/3/0/6/130639537/34f754e.pdf
    • http://socialmynd.com/uploads/1/3/0/5/130543488/kixedosa.pdf
    • http://art8light.com/uploads/1/3/0/6/130604299/dotosotiw.pdf
    • http://christopherhoney.org/uploads/1/3/0/6/130639899/lekavasa.pdf
    • http://mail.newenglandbusinesscenter.com/uploads/1/3/0/7/130739726/wenebujeje.pdf
    • http://mta-sts.attheridge.com/uploads/1/3/0/4/130436271/mumeluravejudam.pdf
    • http://21stcenturygrownups.net/uploads/1/3/0/4/130483417/7816142.pdf
    • http://mta133.qualitynow.net/uploads/1/3/0/4/130435745/b740812.pdf
    • http://towercompaniesinc.com/uploads/1/3/0/5/130540128/tetivofudate.pdf
    • http://healthbeautysaludybelleza.com/uploads/1/3/0/7/130775832/7833959.pdf
    • http://lakelandhomesforsale.net/uploads/1/3/0/8/130814132/denajudebumejup-bikasogitavamo-lejutenaribike-fibezo.pdf
    • http://www.cristofirbradleycabinetry.com/uploads/1/3/0/7/130776157/juwebufokonejif-nazejodufezoje-xorapigix.pdf
    • http://krivak.com/uploads/1/3/0/3/130323437/1640887.pdf
    • http://host30.carmichaelnl.com/uploads/1/3/0/5/130547771/130547771.html#baby+animals+esl+worksheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c87.bin
534c5a3b6d0c8912491ef82bdcea7ed2504e890736b5f682243fb7f56c8ee293		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C87 7768 bytes

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