Malicious PDF — malware analysis report

Static analysis result for SHA-256 13a2d978ce021e08…

MALICIOUS

PDF

41.8 KB Authoring application: PDF Studio
MD5: 4fb29a36f817c21355e1221da1a46076 SHA-1: b7464b990f38535f64f7f3753e6280d6668b4430 SHA-256: 13a2d978ce021e084cfae4781e0587284e0beefa81856ea7efd8fd99ed5b0455
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the sheer volume of external links suggests a coordinated effort to direct users to potentially harmful resources.

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://sarahmelton.com/uploads/1/3/0/5/130538956/mofolizuboz.pdf
    • http://kidsfiresafetytips.net/uploads/1/3/0/7/130739906/cd098a98a2.pdf
    • http://thetapbox.com/uploads/1/3/0/6/130620590/fenufofivolim-jifulobozefafa-fukafu.pdf
    • http://mail2.widebaymotorcomplex.com/uploads/1/3/0/6/130621947/wezawakafa.pdf
    • http://renovbati.fr/uploads/1/3/0/3/130313400/gofobesofudogawib.pdf
    • http://mx.vieparlafoi.com/uploads/1/3/0/7/130740440/fuwidununoxel-fuxidejipoxikid.pdf
    • http://andrewhunold.com/uploads/1/3/0/6/130640028/2962348.pdf
    • http://justpujasamagri.com/uploads/1/3/0/6/130604373/61a5cb0392.pdf
    • http://deboraschiltmans.com/uploads/1/3/0/5/130589433/nomejajedopug.pdf
    • http://ww2.megaworldcondominium.com/uploads/1/3/0/6/130640028/memuv-zibonipi-sefebupituvine-mubojusu.pdf
    • http://architect-inspire.com/uploads/1/3/0/2/130272462/c33e790b73781d4.pdf
    • http://thephapapp.com/uploads/1/3/0/4/130476076/b13077934a7.pdf
    • http://alexisborth.com/uploads/1/3/0/7/130776233/6026351ce7011.pdf
    • http://bswheadworks.com/uploads/1/3/0/7/130775389/1946211.pdf
    • http://truedeflab.com/uploads/1/3/0/3/130323738/2d46fdc1b.pdf
    • http://host36.carmichaelnl.com/uploads/1/3/0/5/130538986/130538986.html#how+to+find+axis+of+symmetry+using+vertex+form
    • 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_off00002d7c.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7C 16036 bytes
font_01_sfnt_off00004534.bin
fc60f96905d8ffb6863fb84ae2d607eba3ec164c399d204b16c7253e01a04c8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4534 9112 bytes

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