Malicious PDF — malware analysis report

Static analysis result for SHA-256 786379040bd05491…

MALICIOUS

PDF

45.5 KB Authoring application: ImageMagick
MD5: e15384f8ae9c8601a1e2368c0b6b40ab SHA-1: e1743ea9b6e5a24a205053ffd56fb7e293113626 SHA-256: 786379040bd0549199e48dbd81e8d34540909c4973e5b8b2aad114f950b865b2
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, pointing to various PDF files hosted on different domains. This technique is often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature, classifying it as phishing malware.

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://sansouciart.com/uploads/1/3/0/2/130270937/7921047.pdf
    • http://adventuresinedtech.com/uploads/1/3/0/6/130639233/fcbd04098461.pdf
    • http://micoding.weebly.com/uploads/1/3/0/6/130620708/welinojevolu_nukuzonipaju_vekab_rojag.pdf
    • http://nounoucergy95.com/uploads/1/3/0/5/130550936/komosumiwitufek.pdf
    • http://agelessfitness.net/uploads/1/3/0/4/130483809/cc16127f8.pdf
    • http://betteraustintoday.com/uploads/1/3/0/3/130379894/6840415.pdf
    • http://townofclermont.com/uploads/1/3/0/4/130488223/wejaxasolijifuzuse.pdf
    • http://pumuv.kqroup.ru/uploads/2020/01/29/vizederurosakifowo.pdf
    • http://nekimastrategies.com/uploads/1/3/0/6/130604218/5122876.pdf
    • http://ententehome.com/uploads/1/3/0/4/130435914/2092742.pdf
    • http://unidacers.store/uploads/1/3/0/5/130588518/fd7bf06cbd.pdf
    • https://zolamaxemil.weebly.com/uploads/1/3/0/3/130379101/nilatekawij_kixaz_refelogifaz.pdf
    • http://ndchair.com/uploads/1/3/0/5/130540072/130540072.html#basic+chemistry+quiz+questions+and+answers
    • 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_off0000134c.bin
e5b62adbfcb34ea281fa0da4c9b24567dd502bbe65d9211f6200b46df857c8e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134C 8196 bytes
font_01_sfnt_off00006a9a.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9A 16268 bytes

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