Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5fd462990de65a6…

MALICIOUS

PDF

34.8 KB Authoring application: GIMP
MD5: ca80040789e6d542accb45c7ea682d28 SHA-1: 2fb03677289e2e41779d968a54f259bbcf2b5ed1 SHA-256: f5fd462990de65a678ab1e3f9d28db729a618687885dd64b065abdcafc357766
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery or execution methods.

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://britainchase.com/uploads/1/3/0/5/130543837/2803628.pdf
    • http://dunawaysurveying.com/uploads/1/3/0/6/130620506/9304683.pdf
    • http://anytime.insure/uploads/1/3/0/5/130588579/960562.pdf
    • http://levelofourtimes.com/uploads/1/3/0/7/130739330/4919042.pdf
    • http://vtflowergardener.com/uploads/1/3/0/6/130620547/6d8162129a62a.pdf
    • http://northmeats.com/uploads/1/3/0/6/130604226/roretenitoj.pdf
    • http://wifeycosmetics.com/uploads/1/3/0/3/130313415/6041537.pdf
    • http://roscomedia.org/uploads/1/3/0/5/130539269/fazuteja_kimonepevawaz.pdf
    • http://noiceclan.com/uploads/1/3/0/6/130604441/zajana.pdf
    • http://usu-retona.site/uploads/1/3/0/6/130621422/femadelo.pdf
    • http://nbptwedding.com/uploads/1/3/0/4/130490602/mimebum.pdf
    • http://momopets.co/uploads/1/3/0/8/130815095/2460852.pdf
    • http://3e3.co.uk/uploads/1/3/0/4/130483759/gogusaguwabud-tapewusafaba.pdf
    • http://fismen-harmonika.com/uploads/1/3/0/9/130969980/2079d19e9d.pdf
    • http://santafedatahub.com/uploads/1/3/0/7/130776823/lozikakoz.pdf
    • http://millershomemadesoaps.com/uploads/1/3/0/6/130621719/kikofekigud.pdf
    • http://yyhia.salon225.com/uploads/1/3/0/7/130739284/130739284.html#vocabulary+in+use+intermediate+student%27s+book+with+answers+2nd+edition

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d8a.bin
862ed9da687607f6f9efb8bb39325a4c47563143e495a9181202b5c8e090e43e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D8A 7464 bytes

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