Malicious PDF — malware analysis report

Static analysis result for SHA-256 f51e38e61a90821d…

MALICIOUS

PDF

33.6 KB Authoring application: Pdftk
MD5: b36f25196cf97b2f3179b243b5e4989d SHA-1: c512c1ae6874abc2f6e9226ffd93a319f7d8a5fb SHA-256: f51e38e61a90821dc66298e0a2e89aeee691755c30b8a36939f96a1e3e5a3b5b
128 Risk Score

Malware Insights

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

The PDF file contains a link farm with 31 external links, many of which point to other PDFs. The document body text attempts to lure the user by presenting itself as an IELTS practice test, which is a common social engineering tactic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious classification.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mcgrawpowersystems.com/uploads/1/3/0/7/130740212/benupod.pdf
    • http://saverahwaypark.org/uploads/1/3/0/3/130313144/morebibolaremo-bupikuzutunex-zatapulatiwumob-xelizalitawu.pdf
    • http://sheersecurity.com/uploads/1/3/0/6/130639563/3f784a.pdf
    • http://thelordswriter.com/uploads/1/3/0/7/130776433/9b7d1a6d62fdc2.pdf
    • http://marymikesmassage.com/uploads/1/3/0/6/130604772/1041873.pdf
    • http://painfulhipresurfacing.com/uploads/1/3/0/4/130488243/7043965.pdf
    • http://nsanegriplegendcarscom.com/uploads/1/3/0/5/130590482/gesinikida.pdf
    • http://gardenglassetc.com/uploads/1/3/0/6/130639439/jetajujaser_ganobawamodaga.pdf
    • http://droncompany.pl/uploads/1/3/0/7/130775584/tesebopinezuni-gevuritenapej-zenuzaromadoxew-ronuloxoxuluxi.pdf
    • http://hinomotorsnuevaecija.com/uploads/1/3/0/2/130288673/98604d.pdf
    • http://toledowater.org/uploads/1/3/0/6/130622002/gapuranegewu_bodegos_wavikabuk.pdf
    • http://www.eoimetrics.ca/uploads/1/3/0/5/130538923/d881c04.pdf
    • http://www.acompassforcalm.com/uploads/1/3/0/9/130969177/mogokuve.pdf
    • http://msbrownsclassroom.com/uploads/1/3/0/5/130539756/petaropefema-poxurelifo-tufababone.pdf
    • http://king-danielsfamilyreunion2019.com/uploads/1/3/0/5/130550841/fuxavaxovebized.pdf
    • http://niacurriculum.com/uploads/1/3/0/5/130545173/poragakedatesa.pdf
    • http://eagohio.net/uploads/1/3/0/3/130313306/40f50d88af04023.pdf
    • http://new.mgh-r.ch/uploads/1/3/0/5/130551898/130551898.html#404+practice+listening+test+for+ielts
    • http://king-danielsfamilyreunion2019.com/uploads/1/3/0/5/13055

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000279a.bin
ce4550215673e3e8c896961c479641322a82b6179723432131eb97977da4b1bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279A 7416 bytes

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