Malicious PDF — malware analysis report

Static analysis result for SHA-256 aedde64b83c87538…

MALICIOUS

PDF

30.9 KB Authoring application: Smallpdf Desktop
MD5: ada3badecc9f6c56c727748d29031495 SHA-1: 5bb6b6e3ecc4c8d905de47c325a9704fbaeba84a SHA-256: aedde64b83c87538175954b14819f12ce91611d3207c310761473e6ece5b589a
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The primary attack vector appears to be a link farm, directing users to numerous external PDF files hosted on unrelated domains. The document body contains garbled text and a few URLs, reinforcing the link farm behavior. The intent is likely to manipulate search engine results or distribute further malicious payloads via the linked PDFs.

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://mikemythphotography.com/uploads/1/3/0/5/130588721/9f4386bdd85859d.pdf
    • http://nyclunarnewyear.org/uploads/1/3/0/4/130488295/d11a64e5020.pdf
    • http://portraitsformodernpeople.com/uploads/1/3/0/6/130621500/1294376.pdf
    • http://simbachile.com/uploads/1/3/0/7/130739121/xijatazeg.pdf
    • http://gobrdx.com/uploads/1/3/0/8/130814421/16bff96b49885.pdf
    • http://simplyinspiredwords.com/uploads/1/3/0/6/130604919/lulokavawiwunazila.pdf
    • http://11pluscolchester.com/uploads/1/3/0/7/130739690/1db1b6907c.pdf
    • http://digitalvitaminagency.com/uploads/1/3/0/5/130551160/xonilevafus.pdf
    • http://coplandia.com/uploads/1/3/0/4/130435875/61f2d48.pdf
    • http://milwaukeepestpros.com/uploads/1/3/0/4/130483207/9370729.pdf
    • http://ratix.net/uploads/1/3/0/6/130621225/boludu.pdf
    • http://cadenceresource.com/uploads/1/3/0/4/130476216/30431d3a646c3.pdf
    • http://redondobeachheating.net/uploads/1/3/0/8/130814235/gafefi-xomoke.pdf
    • http://beeswim.com/uploads/1/3/0/6/130605504/353e5.pdf
    • http://anzik.com/uploads/1/3/0/3/130323424/5495458.pdf
    • http://wanderingsofalix.com/uploads/1/3/0/5/130588410/roborovo_nobeboza_botalojujakudos_nusuvo.pdf
    • http://boldexpressions-testwebsite.com/uploads/1/3/0/3/130323601/wepejilunak_tegukuf.pdf
    • http://resolute-sf.com/uploads/1/3/0/5/130589389/d0532ef422b9.pdf
    • http://mypccabenefits.com/uploads/1/3/0/7/130776123/130776123.html#treatment+otitis+externa+with+perforated+tympanic+membrane

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001c0b.bin
54d8c1daddcc4685c62b0e1fef14fb2b4220f6cf35c3aeb5910f9620627e4fc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C0B 7464 bytes

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