Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e2e9dcfeb05ecc…

MALICIOUS

PDF

35.5 KB Authoring application: LibreOffice Draw
MD5: 39a8a0aaf3ab37d62e9fe49cd01455a7 SHA-1: c50fd98adb8cb027fe758eeaf0fa06a64d73bbcc SHA-256: 58e2e9dcfeb05ecc06ec3e0b3adfd20286a2df1879e6d3c85bc68579c0cf13ba
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning and phishing. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The document body, though partially corrupted, mentions 'Atlas de hematologia clinica pdf gratis', suggesting a lure to download free medical resources which redirects to a link farm.

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://codeinecentralnew.com/uploads/1/3/0/5/130539366/pabenevodef.pdf
    • http://hostmaster.justgosh.com/uploads/1/3/0/7/130775373/6850eba9c57.pdf
    • http://bestecomerce.com/uploads/1/3/0/5/130588651/1691889.pdf
    • http://mhr-international.eu/uploads/1/3/0/6/130639578/b7d60b72cbb8.pdf
    • http://johndennermusic.com/uploads/1/3/0/5/130550936/8842737.pdf
    • http://tjscatering44.com/uploads/1/3/0/2/130289218/nojibironoko.pdf
    • http://www.hismotivation.com/uploads/1/3/0/5/130589126/7063663.pdf
    • http://platteparkchurch.org/uploads/1/3/0/7/130738883/mixolabusadaruz-jeketu-nabuliwobigugol-bibefigaxikovo.pdf
    • http://molliebing.com/uploads/1/3/0/4/130483631/b6ecb80bcba.pdf
    • http://www.3lmboutique.com/uploads/1/3/0/7/130738712/05e63fc.pdf
    • http://lightingdesignlab.net/uploads/1/3/0/3/130379155/9258992.pdf
    • http://cardsbymom.com/uploads/1/3/0/5/130588498/6c6bebadaecba9.pdf
    • http://cookielovecustomsugarcookies.com/uploads/1/3/0/6/130621345/voxipuvokora.pdf
    • http://abcdts.store/uploads/1/3/0/5/130550682/935317eb6c987d.pdf
    • http://africanubuntusafaris.com/uploads/1/3/0/4/130476262/bitabef-gipan.pdf
    • http://tellyourstorybooks.com/uploads/1/3/0/2/130288639/didegijo.pdf
    • http://www.heartlandmeats.com/uploads/1/3/0/9/130969604/ac631e01d418d.pdf
    • http://wolfecityhomecoming.com/uploads/1/3/0/6/130604039/130604039.html#atlas+de+hematologia+clinica+pdf+gratis

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c06.bin
2c307f6936a266b3943a3f7fc643c0658988f9c012c6427c914a699bafb11dba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C06 9780 bytes

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