Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c014831acc3d4b9…

MALICIOUS

PDF

34.2 KB Authoring application: LibreOffice
MD5: 8e0a45445ffe3ab479cc3293f238eb09 SHA-1: 016f5ffee077c65580eb58094a4418fb71e5c0f1 SHA-256: 7c014831acc3d4b9a9a0565585cc298aa3b9bfc6b85ae10024967f89f6e49430
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF files hosted on various domains. This technique is often used for SEO poisoning or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

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://riverboundfarm.com/uploads/1/3/0/6/130604256/4e666368a.pdf
    • http://familybondingcenter.com/uploads/1/3/0/6/130639256/2458587.pdf
    • http://spanishintoenglish.co.uk/uploads/1/3/0/5/130551386/8995849.pdf
    • http://www.munchkin-monitor.com/uploads/1/3/0/4/130476760/9761649.pdf
    • http://liz-accounting.com/uploads/1/3/0/7/130775248/39c4d3bdc8ed.pdf
    • http://viemedia.com/uploads/1/3/0/6/130621190/latimizimifiwote.pdf
    • http://chelseybrookscounseling.com/uploads/1/3/0/7/130740054/d66bbbc1f.pdf
    • http://eventsandmoore.com/uploads/1/3/0/9/130969683/7f61f777dcdd6.pdf
    • http://innovationbroadcastservice.live/uploads/1/3/0/7/130776111/799c07672ebe.pdf
    • http://numinersfootball.com/uploads/1/3/0/7/130775462/7385094.pdf
    • http://mta-sts.kva27.ca/uploads/1/3/0/4/130488308/6766534.pdf
    • http://swimhair.com/uploads/1/3/0/7/130776648/da86c77c81fd3.pdf
    • http://www.sam-tisher-senio-1.rominastiebenphotography.com/uploads/1/3/0/6/130620454/jarofabu_nanejupavateri_garamexu.pdf
    • http://nyc-distribution-film-festival.org/uploads/1/3/0/6/130640155/6557203.pdf
    • http://onehundredrobotslab.com/uploads/1/3/0/5/130551181/b94c193b.pdf
    • http://mgmalehair.com/uploads/1/3/0/5/130543462/bemasinusijow.pdf
    • http://a1360813xstreamtravel.xsideas.com/uploads/1/3/0/6/130604098/130604098.html#azure+ad+connect+password+sync+vs+adfs

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b4e.bin
e5cbed9785ad258e4aead6c72f1374970d96b4a32460cd6d0ece8d334456015b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4E 7312 bytes

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