Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b3c93f0a4e4fa3b…

MALICIOUS

PDF

38.7 KB Authoring application: Inkscape
MD5: 66db8c7c5b5ab365805566fca6e568fc SHA-1: eabb01da0a723b543c12cb9ec6394f3347eac154 SHA-256: 3b3c93f0a4e4fa3b0de46576cf188b1be77eceec0aed3b2a0580ee1e7108fc72
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a redirection mechanism designed to lead users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. No scripts were extracted, and the document body was heavily obfuscated, but the embedded URL structure is the primary indicator of malicious activity.

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://spi-cibernetica.com/uploads/1/3/0/6/130639960/3226388.pdf
    • http://patchculturefc.com/uploads/1/3/0/4/130436202/7694966.pdf
    • http://therealmommy.com/uploads/1/3/0/5/130538996/085f839edcccac6.pdf
    • http://andrewwarnerdogtraining.com/uploads/1/3/0/4/130476288/digowusem-nezewubi-zaxufa.pdf
    • http://peduroqatar2019.net/uploads/1/3/0/6/130605472/5c3497f81e.pdf
    • http://royaltrainridesrentals.com/uploads/1/3/0/2/130271157/xororuzavenop.pdf
    • http://nicolevettraino.com/uploads/1/3/0/4/130490117/2159495f6f1f.pdf
    • http://contentmentcoaching.org/uploads/1/3/0/6/130621385/tavarimajigamomafike.pdf
    • http://easytobuyahouse.com/uploads/1/3/0/5/130545021/2768748.pdf
    • http://studiob.agency/uploads/1/3/0/6/130604744/vekelufeboxujez-ponigejuk-funerokifuwaki.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/3/130323968/130323968.html#dssat+user+guide

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000128c.bin
2f2bad2bbdfc2a543163b1e92de62b1ffd8a1df4d94d3ad211fa558530100d6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128C 8152 bytes
font_01_sfnt_off00005c0b.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0B 2652 bytes

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