Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b804aedc0008d4d…

MALICIOUS

PDF

42.7 KB Authoring application: Karbon
MD5: aee465d7a448cf33239155d74b11abba SHA-1: 39d0ed3f06c825bf984600165f34ce709c6b3ff5 SHA-256: 2b804aedc0008d4dd24c80bdb8d97e7ce7adaa46f848018a146357bade8a40ca
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body discusses alcohol's effects, which appears to be a lure to disguise the malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://nwm2.club/uploads/1/3/0/6/130622068/nejemoser_kowetegudozuv_fafovubidiz.pdf
    • http://answersoperation.com/uploads/1/3/0/6/130639590/fafiluzorulawiwod.pdf
    • http://hostmaster.johnnyallentennis.com/uploads/1/3/0/4/130488332/3851497.pdf
    • http://arcticethics.org/uploads/1/3/0/5/130588336/doxaragumajaxe.pdf
    • http://www.foerderverein-anam-cara.de/uploads/1/3/0/4/130475981/nulesifigofev.pdf
    • http://massagerus.net/uploads/1/3/0/6/130604319/3019050.pdf
    • http://alexabuffini.com/uploads/1/3/0/6/130620937/9649298.pdf
    • http://momsbluecookbook.com/uploads/1/3/0/4/130488578/49cdce640c3.pdf
    • http://www.allurescapes.com/uploads/1/3/0/4/130435881/gazeduwe.pdf
    • http://naturheilpraxis-neuhausen.de/uploads/1/3/0/4/130435716/mibiwifinud.pdf
    • http://mkstucco.com/uploads/1/3/0/2/130288729/rekolovotuguri-dunesejupizigul-dijojeb-xufiteza.pdf
    • http://www.test.voorbijwoorden.nl/uploads/1/3/0/6/130604731/7640607.pdf
    • http://www.hagelandsfamilietreffen.com/uploads/1/3/0/6/130621351/malewakaredol.pdf
    • http://www.elegantcreations.net/uploads/1/3/0/7/130739061/130739061.html#alcohol+affects+your+brain+cells+liver+stomach+lining+and+kidneys

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003460.bin
634a72257bbff31d4b4a0bf8b81a2395ac7343019c0ae4a26220f4a239d82780		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3460 16236 bytes
font_01_sfnt_off00004c4e.bin
d9e78f22301e9aee9a38aec098b56ad472030830f6d06f43f843c87eb3f29c34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4E 8456 bytes

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