Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2baf5a1455f094f…

MALICIOUS

PDF

45.2 KB Authoring application: Inkscape
MD5: ed1f0f46c04e87ec92047b9b246da410 SHA-1: 9b0a6fed152b9fe19f0fbf086c9fb6c760505377 SHA-256: f2baf5a1455f094f158db36a858cb8e31b9859b6bcdbf38c1846a9c4e09e9370
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted from this sample.

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://theabsurdists.com/uploads/1/3/0/4/130436492/6696695.pdf
    • http://misabeppa.com/uploads/1/3/0/3/130379049/0f741e07179a90.pdf
    • http://digitalnomadcareer.com/uploads/1/3/0/6/130621110/7be908.pdf
    • http://babiesbreath.com.au/uploads/1/3/0/4/130476047/wenaduse.pdf
    • http://barbaraweiderhouse.ca/uploads/1/3/0/4/130488197/nuwofazowusu_fumibonibuwasa_zabuvikoxobaxep_tefobomanufu.pdf
    • http://edumorethailand.com/uploads/1/3/0/5/130547552/757552a2f25d1.pdf
    • http://kelliottportfolio.com/uploads/1/3/0/6/130605080/pepifitosemuw-zagap-rezozefosomemu.pdf
    • https://zafipaferem.weebly.com/uploads/1/3/0/2/130289233/4374552.pdf
    • http://adgermanwarehouse.com/uploads/1/3/0/7/130776225/a20791f8.pdf
    • http://constructiondollarsandsense.net/uploads/1/3/0/5/130543333/1043929.pdf
    • http://capecodcoastalhomeinsurance.com/uploads/1/3/0/6/130639506/vapiruno.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/5/130588153/130588153.html#kindle+que+formatos+puede+leer

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000133e.bin
ae5832d0360751e3805c6a5bbe63e6159074c6a3bea7a8d8054742a6f64bb47a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133E 9152 bytes
font_01_sfnt_off00006951.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6951 16268 bytes

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