Malicious PDF — malware analysis report

Static analysis result for SHA-256 3594cf7afec47db6…

MALICIOUS

PDF

50.4 KB Authoring application: Scribus
MD5: d6c5d7a1b432a88d3bf57ddaf32b337a SHA-1: 4dde7ec989a9251caf983b2a9213f3415dce680e SHA-256: 3594cf7afec47db6c49bfd1ac0661a64da34cf35b33a4ea30a22e4749420b5aa
150 Risk Score

Malware Insights

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

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 SEO manipulation tactic, as flagged by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are the primary IOCs, suggesting the document's purpose is to redirect users to potentially harmful content.

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://mitchell-winter.com/uploads/1/3/0/6/130640236/5346522.pdf
    • http://hospitalscoloradosprings.com/uploads/1/3/0/5/130551907/8252550.pdf
    • http://ux-consulting.co/uploads/1/3/0/8/130813668/4001640.pdf
    • http://midwesternchristianacademy.org/uploads/1/3/0/5/130539354/1746693.pdf
    • http://bettergaragestorage.com/uploads/1/3/0/7/130775386/witewojujivemix-fatitefafavido.pdf
    • http://www.consultsoriano.com/uploads/1/3/0/7/130739980/4405869.pdf
    • http://montevistacalvarybaptist.org/uploads/1/3/0/5/130588548/6ee31fa.pdf
    • http://octorock.net/uploads/1/3/0/6/130639766/ba323db8edafe9.pdf
    • http://www.selkiesmithdesign.com.au/uploads/1/3/0/8/130874631/3430f65221efe5a.pdf
    • http://navingulia.info/uploads/1/3/0/7/130776023/1258695.pdf
    • http://hatchreno.com/uploads/1/3/0/5/130590578/dodese.pdf
    • http://creativesmut.com/uploads/1/3/0/5/130590482/d716733f37c667d.pdf
    • http://synergyhairandbeautyelloughton.co.uk/uploads/1/3/0/4/130483070/5357574.pdf
    • http://monumnentalbeginnings.com/uploads/1/3/0/5/130590508/7731753.pdf
    • http://pinkchard.com/uploads/1/3/0/7/130776891/aa5b9.pdf
    • http://jesselcox.com/uploads/1/3/0/2/130289292/5523616.pdf
    • http://raviniacounseling.com/uploads/1/3/0/8/130814630/5960742.pdf
    • http://zenergieconseil.com/uploads/1/3/0/4/130490245/pukevufo.pdf
    • http://dondealmuerzo.com/uploads/1/3/0/4/130488320/tigolaxabaxamu_vofix_zowijotoxub_jirasezazu.pdf
    • http://nicolegoodrich.com/uploads/1/3/0/4/130483288/1752e.pdf
    • http://orionhat.com/uploads/1/3/0/7/130739614/72638a3b80ee.pdf
    • http://sethgangwer.com/uploads/1/3/0/3/130323212/bizexati_dasigibezoje.pdf
    • http://4u8qy1.bdgct.com/uploads/1/3/0/2/130288594/130288594.html#vocabulary+in+practice+_4_+intermediate.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001053.bin
4786adb95aa135f7b5316663dc04fc67711971ff4445fd8d5125e50127fded9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1053 8524 bytes

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