Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fa61578c534d62…

MALICIOUS

PDF

44.1 KB Authoring application: OpenOffice Draw
MD5: edcefc9ba800db7a33237c1eac1a37f6 SHA-1: 79e052f69d6248960cf19ccbd4fa4327aa03855c SHA-256: 34fa61578c534d62fbb6ae5f6fcb439986e3702afcbf8a2b729c601502c4a06d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also flagged this file as malicious, specifically identifying it as Pdf.Phishing.TtraffRobotInstall. The document body, though heavily obfuscated, contains text related to oil pollution, which appears to be a lure to disguise the malicious intent of linking to numerous external PDF files. The primary attack pattern involves directing users to these external resources.

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://alexdibranco.us/uploads/1/3/0/8/130874409/1238074.pdf
    • http://forzadesignbuildremodel.com/uploads/1/3/0/3/130379163/6584083.pdf
    • http://columbiaperioalumni.com/uploads/1/3/0/5/130551072/poripenexodev-janeja.pdf
    • http://newspiritholdings.com/uploads/1/3/0/8/130874012/xubizano.pdf
    • http://celebrationsandsweetcreations.com/uploads/1/3/0/6/130620557/rixenedexofifabezira.pdf
    • http://bridgerbasinoutdoors.shop/uploads/1/3/0/8/130874126/cd2c549ceeeb94.pdf
    • http://federalbackgroundchecks.org/uploads/1/3/0/6/130640029/e866689af6de.pdf
    • http://villasdiamante.com.mx/uploads/1/3/0/5/130539492/5049482.pdf
    • http://nastymattress.com/uploads/1/3/0/8/130874501/f25552e.pdf
    • http://89knc.bpmtc.com/uploads/1/3/0/2/130289158/674c60e29da.pdf
    • http://maryneimanphotography.com/uploads/1/3/0/6/130620651/fafetagi.pdf
    • http://sbtopics.com/uploads/1/3/0/6/130620930/suzatazezosug-folaver-zegodusonulu.pdf
    • http://chrisandjeremy.com/uploads/1/3/0/5/130539738/pajogixalodogukozi.pdf
    • http://www.misprid.com/uploads/1/3/0/6/130639939/tepawulazenupakim.pdf
    • http://northstarcsllc.com/uploads/1/3/0/7/130776519/7578255.pdf
    • http://gertieandruth.com.au/uploads/1/3/0/6/130620863/ronajijivu.pdf
    • http://mindmusclefitness.com/uploads/1/3/0/7/130775503/2523166.pdf
    • http://newfilmmakersadventure.com/uploads/1/3/0/6/130604692/db7f95a.pdf
    • http://acqrealty.com/uploads/1/3/0/6/130639784/divifobekatel.pdf
    • http://pudgery.com/uploads/1/3/0/2/130272554/7972176.pdf
    • http://cmteam.com/uploads/1/3/0/2/130289731/5639376.pdf
    • http://www.goldenafrovr.com/uploads/1/3/0/2/130271158/130271158.html#effects+of+oil+pollution+on+the+marine+environment+pdf
    • http://columbiaperioalumn

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c58.bin
62bbbf0aa22991f4b2dfb6d4e036ebecc185d6b4a6635001dd56f34f999f1e11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C58 7916 bytes

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