Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d05e97273f0d689…

MALICIOUS

PDF

37.3 KB Authoring application: Smallpdf Desktop
MD5: 948e0a94f2331c3014b176bbc1a21832 SHA-1: d121b1d86b8c1902ccbb193108ba90001e8e634c SHA-256: 0d05e97273f0d689a514a1f23f70dd96da323b444c52d505f9a08305eea0391b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The primary finding is a large number of embedded external URLs pointing to PDF files on various domains, indicative of a link farm or a distribution mechanism for further malicious content. The document body itself is heavily obfuscated and does not provide clear textual lures.

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://runa-ua.com/uploads/1/3/0/3/130323328/6717679.pdf
    • http://thatsgoodthat.com/uploads/1/3/0/6/130639590/72b41300e46084.pdf
    • http://southeastee.org/uploads/1/3/0/7/130776684/35c3e7da305f2b.pdf
    • http://onboardxpress.com/uploads/1/3/0/6/130639291/sowuwidujofukis-wegape-vuserugosaj.pdf
    • http://nvholidaybazaar.com/uploads/1/3/0/3/130323477/gujokogobiregabejate.pdf
    • http://rawk-cbd.shop/uploads/1/3/0/6/130621345/natatajazowuwaxabal.pdf
    • http://jezetta.com/uploads/1/3/0/6/130604789/rekebazugose.pdf
    • http://soloforsenate.com/uploads/1/3/0/5/130551488/930172.pdf
    • http://pastandpresentmedia.org/uploads/1/3/0/4/130476574/rapine_lapanor_rosezaru.pdf
    • http://www.ebysoil.com/uploads/1/3/0/5/130543087/7312563.pdf
    • http://boltprogram.com/uploads/1/3/0/5/130543740/7c3d29af.pdf
    • http://we99ers.com/uploads/1/3/0/5/130590265/901fc6ae8.pdf
    • http://copyright-form.com/uploads/1/3/0/2/130270843/xururop_wivijibi_vomexixe_repofogesal.pdf
    • http://mtbgus.com/uploads/1/3/0/5/130551805/0cfa7c3a7ef.pdf
    • http://publicrecordsfm.com/uploads/1/3/0/5/130545895/pigevovepum_bitub_zokaniweg.pdf
    • http://tnblistecadeau.ca/uploads/1/3/0/4/130483213/kujuwototan_bukitekapojelev_vilobedari.pdf
    • http://ufe2li.bdgct.com/uploads/1/3/0/7/130775088/130775088.html#%C3%A7al%C4%B1ku%C5%9Fu+kitabi+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032df.bin
97f520596b0bde843d8bf0ad08ca9e3b95e6fe4142481e11116898d4f9855051		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32DF 10192 bytes

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