Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbd92c2de635a299…

MALICIOUS

PDF

33.5 KB Authoring application: PDF Studio
MD5: 2c83bac2166ea612957d756428c8cb8f SHA-1: 6989223bcf7adfd4ff415f7f2b2b3352a2a9cf8c SHA-256: bbd92c2de635a299ea47341a1dc834e238d8377dd783d2badf6ad96c3c517a09
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection purpose. The ML classifier also strongly flagged this as malicious. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://www.logintest.patruus.com/uploads/1/3/0/2/130287862/kunokigog-melekukix.pdf
    • http://nokr.nl/uploads/1/3/0/3/130313161/rivizi_nisumaso_xejalewujilov.pdf
    • http://shermanroominghouse.com/uploads/1/3/0/5/130544118/nagan.pdf
    • http://s6wraps.com/uploads/1/3/0/7/130775357/defelejekarosafeguz.pdf
    • http://livingideas.net/uploads/1/3/0/5/130539881/1bc1030c3ac100.pdf
    • http://restaurantwaterloo.nl/uploads/1/3/0/5/130541445/sugon.pdf
    • http://www.robbiehamblin.com/uploads/1/3/0/6/130622061/60772dc9d152.pdf
    • http://novogranatense-coca-seeds.com/uploads/1/3/0/7/130739517/detujubemokufo_rufizag_tozubalulanex_dawatupawadadid.pdf
    • http://cancercareyoungadults.org/uploads/1/3/0/7/130775677/jetovuxemadi.pdf
    • http://www.mexicanwolffund.org/uploads/1/3/0/7/130739719/gelumetamex_vedexoti_lemerozivu.pdf
    • http://mygoodpaper.com/uploads/1/3/0/7/130776517/naris_fusezijumer_jamusopajowa_dalusuxeg.pdf
    • http://host180.carmichaelnl.com/uploads/1/3/0/4/130435588/130435588.html#acne+treatment+cks

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002bc2.bin
4d1fa28801498b28d2509abee723a892490d2a93eac4e33529330b797acb3ff3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC2 7816 bytes

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