Malicious PDF — malware analysis report

Static analysis result for SHA-256 37fc80989fdb2216…

MALICIOUS

PDF

31.0 KB Authoring application: Karbon
MD5: ffe3b96a1c81963cfa4d62709f8cb7e6 SHA-1: 5b81815c606c7c37bd8f8f2048d6f270469c355c SHA-256: 37fc80989fdb221674594cb278f685a0daf79f156c169d9962a98ee2927e5152
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links to other PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a phishing or traffic redirection intent. The document body, though partially corrupted, contains URLs that are consistent with the heuristic findings.

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://blueegg.net/uploads/1/3/0/5/130540453/zuwule.pdf
    • http://elpproduction.com/uploads/1/3/0/6/130639655/2bc704c83ff4.pdf
    • http://remonty-slowinski.pl/uploads/1/3/0/9/130969476/f4090.pdf
    • http://natashadoulabirthmarks.com/uploads/1/3/0/2/130289371/5593342.pdf
    • http://morriscorporatecenteriii.com/uploads/1/3/0/6/130640194/towidetorazijusu.pdf
    • http://masterofthedomains.com/uploads/1/3/0/6/130621357/wutujaliminizimipa.pdf
    • http://www.kaplanshack.com/uploads/1/3/0/2/130291975/xukaxisimevafofekisi.pdf
    • http://refinance.mortgage/uploads/1/3/0/7/130775725/1675962.pdf
    • http://www.brundlethwaite.com/uploads/1/3/0/5/130588185/bf8b60.pdf
    • http://feardonald.com/uploads/1/3/0/7/130775772/833b1f0136b1d.pdf
    • http://mountvernonparking.com/uploads/1/3/0/4/130488832/kapovuw-vewapolezofipiw-vepobut-fazebawelavulen.pdf
    • http://dallal.info/uploads/1/3/0/7/130776099/30787.pdf
    • http://spaceadmiral.net/uploads/1/3/0/7/130738917/vopoles_domozu.pdf
    • http://mindbodymend.com.au/uploads/1/3/0/4/130477661/eafc905aba7e1c.pdf
    • http://95bpm.com/uploads/1/3/0/4/130483086/xorowup-xadizebilo.pdf
    • http://wickedslushwest.com/uploads/1/3/0/6/130639886/3124621.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/7/130776795/130776795.html#differentiate+between+slow+sand+filter+and+rapid+sand+filter

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001eff.bin
9b3b2eeea4bf301d6ed07a7cb3f0c979a3e25dd3f78dad43a6d5b7aaa675313f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EFF 7260 bytes

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