Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92ccc6805e87623…

MALICIOUS

PDF

48.0 KB Authoring application: GIMP
MD5: a7eea945c80b39595bdc6cbd77c8f631 SHA-1: 1d8f0b01b29e12cb0793daa9b503a68d91aa54d5 SHA-256: d92ccc6805e876230262273444f572101c885bafb3b534a1d10787edfb733620
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness. The embedded links point to various PDF files hosted on different domains, suggesting a tactic to generate traffic or distribute further malicious content. 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://boozybakerygames.com/uploads/1/3/0/5/130551434/87445.pdf
    • http://opros-russia.online/uploads/2020/01/29/fopiposeb-loxotevez-xodovipakareb.pdf
    • http://zaze.piterlife-78.ru/uploads/2020/01/28/saraxiguzov.pdf
    • http://rapkins.com/uploads/1/3/0/3/130379711/zefebafofujulagedudu.pdf
    • http://simonbrightsalon.com/uploads/1/3/0/5/130539840/8553826.pdf
    • http://vatawab.0706shpps05.fun/uploads/2020/01/29/6711294.pdf
    • http://carllarosa.com/uploads/1/3/0/4/130488169/417275.pdf
    • http://bhpaschoolinspain.com/uploads/1/3/0/4/130489763/wozugenebaxabetasopu.pdf
    • http://judgeammendola.com/uploads/1/3/0/6/130620341/muzarewatumat.pdf
    • http://drjamesworling.net/uploads/1/3/0/6/130639950/vuvidisujizemi-xebivuv-mebaxupopujoput.pdf
    • http://basementcityproductions.com/uploads/1/3/0/5/130588506/voladaxam.pdf
    • http://newhavenmo.com/uploads/1/3/0/4/130476161/sagudur.pdf
    • http://my911alerts.com/uploads/1/3/0/5/130588934/fusigojajuluneleja.pdf
    • http://shop-perfectly-impressive-store.com/uploads/1/3/0/6/130639477/7bfc9540.pdf
    • http://premierdraftroofing.com/uploads/1/3/0/5/130588796/muzov.pdf
    • http://phraseologychoir.com/uploads/1/3/0/2/130289620/67b6c91dd668c.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/6/130604295/130604295.html#walt+disney+animated+movies

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001499.bin
64407f961ea16c6a4f1f008a9aaebb8f2834512132a64c40b4e46030d55e74c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1499 8244 bytes
font_01_sfnt_off0000805f.bin
072f96c9ea44fd417974645b435e24d6a68430eaa7204ce0629fe6c4263bc52e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x805F 2684 bytes

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