Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c4eb9f991b5bc9…

MALICIOUS

PDF

37.9 KB Authoring application: OpenOffice.org
MD5: f2329162e38a5db285be7907635375d2 SHA-1: 316630b92f47776f3d6fd0c00cf0c06c573d2d0d SHA-256: e8c4eb9f991b5bc94b44e1571c18e3d47e2c89f33d06938b0cf8606307d978ba
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body contains garbled text and mentions OpenOffice.org, which is likely a lure or obfuscation.

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://litem.net/uploads/1/3/0/2/130272286/5178473.pdf
    • http://kyoto-japan-django.club/uploads/1/3/0/6/130620503/8819246.pdf
    • http://beapreece.com/uploads/1/3/0/2/130272270/131283.pdf
    • http://www.bringbacklostloverspells.com/uploads/1/3/0/5/130539583/rukar.pdf
    • http://wallawallatreecare.com/uploads/1/3/0/6/130639230/kakikuxi.pdf
    • http://themeanderingbakery.com/uploads/1/3/0/4/130490250/a92186a836820.pdf
    • http://nataliekasdan.com/uploads/1/3/0/7/130775271/3635671.pdf
    • http://www.rteoe.lhjgp.com/uploads/1/3/0/5/130542907/80452ea0db3.pdf
    • http://handheldnation.com/uploads/1/3/0/2/130271212/c948030cbb05.pdf
    • http://betterkidstuff.com/uploads/1/3/0/4/130435667/ca3d559093b.pdf
    • http://exfdainspectors.com/uploads/1/3/0/8/130813768/284892.pdf
    • http://smplanka.org/uploads/1/3/0/7/130776279/tijaruti_zosukodune_mevinoselumad_xakixaxo.pdf
    • http://novembereleven.net/uploads/1/3/0/6/130621013/vafutigowozunifip.pdf
    • http://thesaltcollective.net/uploads/1/3/0/7/130776492/5345616.pdf
    • http://chinhxacmuctieu.com/uploads/1/3/0/4/130483070/8019c3892d0aea.pdf
    • http://roperlawoffice.com/uploads/1/3/0/6/130639212/5162772.pdf
    • http://webmail.shrinershomebrew.com/uploads/1/3/0/2/130289519/9d032ab48b.pdf
    • http://knightdalecomputerrepair.net/uploads/1/3/0/6/130604772/mizari-wibonaxer.pdf
    • http://estudio-thuban.com/uploads/1/3/0/8/130874026/130874026.html#list+of+most+common+regular+verbs+in+past+tense
    • http://betterki

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000366b.bin
c0a8ce4a3388b7542ed857fa46f37952dd429d999c60d6e2bea55d7d747f366d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x366B 8024 bytes

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