Malicious PDF — malware analysis report

Static analysis result for SHA-256 34af994bfce532e6…

MALICIOUS

PDF

37.9 KB Authoring application: Smallpdf Desktop
MD5: b4cbfa3df2ea4feaf5463efd95dde17f SHA-1: ba6ef934f66382987605e6cb4f065e423ad888ce SHA-256: 34af994bfce532e6e07928922c8cbe7e9ed27d4c447ed720e663bc021bcf8ab0
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier output further support its malicious nature. The primary attack pattern involves directing users to a link farm, likely to distribute malware or conduct phishing operations.

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://mrskiriluk.net/uploads/1/3/0/5/130590368/larizuxi_dedokav.pdf
    • http://doublekdorpersheepranch.com/uploads/1/3/0/7/130739837/4093129.pdf
    • http://awbphotography.ca/uploads/1/3/0/6/130621185/74164.pdf
    • http://andigeloolaw.com/uploads/1/3/0/7/130739491/108974.pdf
    • http://poshgroom.com/uploads/1/3/0/7/130776483/banavekuredoba.pdf
    • http://sarahdguerra.com/uploads/1/3/0/2/130270790/23c551.pdf
    • http://www.flesherpoint.com/uploads/1/3/0/3/130323491/bogaziduvadizuvorez.pdf
    • http://www.frank-he.com/uploads/1/3/0/2/130273944/97378ac66945f.pdf
    • http://camporiondo.com/uploads/1/3/0/7/130739020/vebesi.pdf
    • http://volnaiskra.com/uploads/1/3/0/6/130640175/4293716.pdf
    • http://nycresistor.net/uploads/1/3/0/7/130739250/sepoxufetizusejil.pdf
    • http://kcmoboys.com/uploads/1/3/0/7/130738789/3d4b450547d4.pdf
    • http://millennialwellnesscenter.com/uploads/1/3/0/6/130604541/jenedukikozoba.pdf
    • http://apartmentgems.com/uploads/1/3/0/8/130814007/kupeg.pdf
    • http://art4peace.net/uploads/1/3/0/4/130490036/kawususaxijiv.pdf
    • http://smithandbeauty.com/uploads/1/3/0/6/130621844/2836c2e67f5.pdf
    • http://www.rachaelfulk.com/uploads/1/3/0/7/130738593/1463047.pdf
    • http://tagrocks.org/uploads/1/3/0/2/130289161/6636428.pdf
    • http://bloodsugarbikemagic.com/uploads/1/3/0/5/130588169/fidatux.pdf
    • http://bladescommerciallawncare.com/uploads/1/3/0/7/130739980/021e264b5.pdf
    • http://orthogistic.com/uploads/1/3/0/5/130551245/fusuwiri-vasol.pdf
    • http://mta-sts.mail.churchesinmissions.org/uploads/1/3/0/7/130739656/70d1770754e5.pdf
    • http://ready2mediate.com/uploads/1/3/0/6/130604254/putalu.pdf
    • http://andressalazar.com/uploads/1/3/0/2/130289735/tinanebozepapab_fomoleba.pdf
    • http://ry4wn.bpmtc.com/uploads/1/3/0/4/130476318/130476318.html#acls+algorithms+2018+test
    • http://bladescomme

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003092.bin
87667c98627ff15ee7d5e6da1b269da582668428f71acb1d2b9e0859cea4fc4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3092 8024 bytes

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