Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d5892c26d293ac8…

MALICIOUS

PDF

44.9 KB Authoring application: SWFTools
MD5: 1cb66e96a886c811a20c69130db9b4ce SHA-1: f4aa30b38eb1d962fbf83b60edbe62cecf9db9fa SHA-256: 4d5892c26d293ac8fdc7e814f42511ac1b01e5c91ed0293dec4ade4cf1eec49e
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as phishing or a trojan downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://calciomaestro.com/uploads/1/3/0/3/130323127/14639.pdf
    • http://mokapuelem.org/uploads/1/3/0/7/130776828/07b657c25.pdf
    • http://globalstarpartners.com/uploads/1/3/0/6/130620843/6033941.pdf
    • http://www.johnsonsfamilyfitness.co.uk/uploads/1/3/0/5/130588445/62b65.pdf
    • http://lighteracu.com/uploads/1/3/0/6/130621213/takopep-zejexewagizimo-filapebuxam.pdf
    • http://nuohotels.com/uploads/1/3/0/5/130538959/616264.pdf
    • http://htrionline.net/uploads/1/3/0/2/130288673/gijaketig.pdf
    • http://www.mtdorabuzz.com/uploads/1/3/0/3/130323207/susimot.pdf
    • http://misdoc.com/uploads/1/3/0/5/130542934/4788847.pdf
    • http://admin.ukunsignedsongwriter.co.uk/uploads/1/3/0/6/130639423/9664546.pdf
    • http://thetrumpenigma.com/uploads/1/3/0/6/130604799/d70f39e979ba.pdf
    • http://ronyah-arts.com/uploads/1/3/0/7/130775145/xapojizov-febeb.pdf
    • http://augustapickleball.org/uploads/1/3/0/2/130289301/fagotimiguxel.pdf
    • http://www.sherrys-boutique.com/uploads/1/3/0/5/130539842/4885550.pdf
    • http://zuqiuxiaojiangzhongwenban.jhamrick.com/uploads/1/3/0/5/130588688/jeluxalitibefap.pdf
    • http://solucionesacabados.com/uploads/1/3/0/7/130775520/terikixenesiwig-sewagijusebexus.pdf
    • http://nc-zeitgeist-foundation.org/uploads/1/3/0/7/130775143/fovezamo.pdf
    • http://deidredanielle.shop/uploads/1/3/0/6/130604986/jomubobuxafojo-ruvix.pdf
    • http://elitebathrefinishing.com/uploads/1/3/0/2/130272286/791212.pdf
    • http://betlogistics.us/uploads/1/3/0/8/130874046/5737101.pdf
    • http://dearbestie.com/uploads/1/3/0/6/130639950/ae6de3dd1.pdf
    • http://krystalsforthespirit.com/uploads/1/3/0/2/130289410/ac60c21.pdf
    • http://sweetstaysalem.com/uploads/1/3/0/6/130604583/dinomef_lawadomukiloro_foxoki.pdf
    • http://amicoffeecompany.com/uploads/1/3/0/2/130272932/vowimonojozoje.pdf
    • http://819.bpmtc.com/uploads/1/3/0/4/130476098/130476098.html#how+to+improve+reading+in+ielts+test

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004034.bin
b0a6a33381002d1c379ca931d660fe98df7a73518421c8b234b9dc16af60e95a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4034 2696 bytes
font_01_sfnt_off00004c49.bin
d189182884d18e5d99ea29831758cc361b6fccf8c0918a62a9164ee1fe3937e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C49 7892 bytes

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