Malicious PDF — malware analysis report

Static analysis result for SHA-256 801b98913a47dd08…

MALICIOUS

PDF

49.8 KB Authoring application: LibreOffice
MD5: dd3c13fbcdc65f4a5c475499282339a8 SHA-1: 8e9a6cb0055c6d76a6d176c74888bf655d886b39 SHA-256: 801b98913a47dd080329778e8374ce34f33eaab0f06e42b98a6bbbf1088e12d8
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs. This behavior is indicative of a link farm designed to distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs are the primary IOCs, suggesting a phishing or content-luring attack.

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://www.brebnerlaw.com.au/uploads/1/3/0/8/130814248/bcc4e7b8197.pdf
    • http://ncdiner.shop/uploads/1/3/0/6/130621501/9121497.pdf
    • http://wordzap8.com/uploads/1/3/0/5/130550880/275455.pdf
    • http://boldncreative.com/uploads/1/3/0/6/130604896/xisenagibuwefi-mikufoderize-bixeb.pdf
    • http://checkeredflagbmw.net/uploads/1/3/0/6/130639599/bifawenezuj_tejasizimeg_mexefe.pdf
    • http://shopsassybee.com/uploads/1/3/0/5/130551558/modazu-wogiwapinokile-sasukinonasewe-zulusasedijej.pdf
    • http://floodevac.org/uploads/1/3/0/6/130639862/goderigefelu.pdf
    • http://mx.tminz.net/uploads/1/3/0/4/130476143/14439c77b5843.pdf
    • http://taylorsdatingcarehome.com/uploads/1/3/0/6/130621226/4560764.pdf
    • http://mta-sts.dansarad.ro/uploads/1/3/0/6/130639971/wazaxadunoleren-kediken-zosove-vipepibizepif.pdf
    • http://www.casasf-wellness.org/uploads/1/3/0/6/130604594/bozuja-luxabewalagokew-zukoni-giruxujumuf.pdf
    • http://domelinsurance.net/uploads/1/3/0/8/130813372/d3c1dbbe0c531.pdf
    • http://horsepix.nl/uploads/1/3/0/2/130291996/4430205.pdf
    • http://premierpave.co.uk/uploads/1/3/0/9/130969738/nudilosugorivesilew.pdf
    • http://lashlab-luxury.com/uploads/1/3/0/5/130588607/4e13cd.pdf
    • http://vibrationalworld.eu/uploads/1/3/0/4/130483507/sapetomil.pdf
    • http://nancyandersonmarketing.com/uploads/1/3/0/2/130287266/votojenit.pdf
    • http://ageprojects.com/uploads/1/3/0/5/130546343/2667097.pdf
    • http://mta-sts.mx.fastdrivingtest.com/uploads/1/3/0/5/130590474/8145468.pdf
    • http://www.britmariescountryboutique.com/uploads/1/3/0/5/130539758/5fd0ee1f.pdf
    • http://natureguidetrainingbotswana.com/uploads/1/3/0/5/130542780/4104131.pdf
    • http://merz-verlag-en.com/uploads/1/3/0/5/130539492/madigutufelo.pdf
    • http://thecounselxpress.com/uploads/1/3/0/4/130488779/4261344.pdf
    • http://london-pet-grooming.co.uk/uploads/1/3/0/2/130289756/e85742.pdf
    • http://wcd-bbe54d23.mgh-r.ch/uploads/1/3/0/5/130590698/130590698.html#airtel+dth+zee+tv+channel+number

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001074.bin
d252b72ec47a13ebcf4e19a35294ab7cb0e91e190287e3aa966da4a94605462b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1074 8720 bytes