Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e2fa05cdd68c65…

MALICIOUS

PDF

40.0 KB Authoring application: OpenOffice.org
MD5: beed18170b250d1df756d3061b48ed01 SHA-1: ff18a7f3cc21791ca8f91a269c2e2cd08f9f85a3 SHA-256: 87e2fa05cdd68c659030554acec5f257c7dbb672202901f40c0d05f5f362ffd2
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique commonly used for link farms to artificially inflate search engine rankings or distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The primary attack pattern involves luring users to click on these links, which likely lead to phishing pages or further malware downloads.

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://leffet.fr/uploads/1/3/0/8/130813846/7ebbcbcd6992a49.pdf
    • http://drgnzombiestournament.com/uploads/1/3/0/5/130551536/xavenif.pdf
    • http://branchettastreasures.com/uploads/1/3/0/7/130775195/jaxuri-jaxegexorise.pdf
    • http://misssupremepurityqueen.com/uploads/1/3/0/6/130640199/nulubobax-roronu.pdf
    • http://mydiabbyhc.com/uploads/1/3/0/5/130590371/xozob.pdf
    • http://www.looksbeautyandnails.nl/uploads/1/3/0/7/130776428/9d6fb.pdf
    • http://nsolc.com/uploads/1/3/0/5/130588256/674510.pdf
    • http://trentriverdesigns.com/uploads/1/3/0/2/130272481/8d46eb5c7c7.pdf
    • http://nomegasitehere.com/uploads/1/3/0/6/130604213/8171520.pdf
    • http://zo2yd.slpny.com/uploads/1/3/0/2/130272395/4fcde4f2dc7917.pdf
    • http://welcomeneighborftsmith.com/uploads/1/3/0/7/130740342/2af3fbf1.pdf
    • http://carbonneutralnetworks.com/uploads/1/3/0/7/130738732/jadubimo-ketazapejoz-nesuv-bojumagibivisaw.pdf
    • http://elysianresources.net/uploads/1/3/0/5/130588457/morerevebet.pdf
    • http://sacramentoyardcare.com/uploads/1/3/0/9/130969338/2b03be6c850993.pdf
    • http://555-jeudirouge.fr/uploads/1/3/0/5/130590395/3474205.pdf
    • http://mydmdesign.com/uploads/1/3/0/6/130603887/bijideraxezu.pdf
    • http://radio-pictures.com/uploads/1/3/0/6/130604723/xaxirufuto.pdf
    • http://geras.sk/uploads/1/3/0/2/130288444/novur-zokipunuruj-fididetozumopum.pdf
    • http://txa4d.com/uploads/1/3/0/8/130874179/mebowaladus-pifiba-molili.pdf
    • http://prosepia.com/uploads/1/3/0/5/130550833/130550833.html#gamepro+magazine+pdf
    • http://radio-pictures.com/upload

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003f2c.bin
c64d4d95afae35640df4a0d335f81b1b869e4587b2e3f5fff2bed4adc4d4e563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F2C 7552 bytes

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