Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c66d7e74004954…

MALICIOUS

PDF

42.4 KB Authoring application: Scribus
MD5: ab6b19be7d4855d5c7fe7ba0d44743bd SHA-1: 0e81f42c56730a571ad144b172858856a315d09f SHA-256: 97c66d7e7400495484e37309445519c5ee88e023e7964dbe90d65b84237c12d8
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies the mass external PDF link farm, with the first URL being http://damaitours.com/uploads/1/3/0/5/130588370/sovaru.pdf. No scripts were extracted from this sample.

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://damaitours.com/uploads/1/3/0/5/130588370/sovaru.pdf
    • http://chicklit.info/uploads/1/3/0/4/130488834/jizobewe_wadej_mudafibox.pdf
    • http://thepacketpusher.net/uploads/1/3/0/7/130775306/2020f6ce85613a.pdf
    • http://hardwarebridge.com/uploads/1/3/0/6/130620859/5317826.pdf
    • http://pdxpersonalinjury.com/uploads/1/3/0/8/130813054/vidimosa.pdf
    • http://seattlebarterexchange.com/uploads/1/3/0/5/130543483/5362049.pdf
    • http://ntwc.group/uploads/1/3/0/6/130620389/wubesited-latowiragu.pdf
    • http://michelleblanchette.org/uploads/1/3/0/5/130589064/woguxed-rozusekuweliz.pdf
    • http://hidingspace.online/uploads/1/3/0/6/130604595/tuvimu.pdf
    • http://circleuponline.com/uploads/1/3/0/7/130775823/3917469.pdf
    • http://teamjaime.com/uploads/1/3/0/5/130539642/6f232aee.pdf
    • http://footballcollectible.org/uploads/1/3/0/5/130589385/8219093.pdf
    • http://lemonews.com/uploads/1/3/0/6/130620423/zariwedodokulolin.pdf
    • http://beadmesilly.com/uploads/1/3/0/8/130814052/4286669.pdf
    • http://artm.online/uploads/1/3/0/5/130538996/ruwejo-keloli.pdf
    • http://stevenmatos.studio/uploads/1/3/0/6/130621002/bepaxafufisisu-zibiromatewegi-jodakavabu-beduzabiv.pdf
    • http://spice-grind.com/uploads/1/3/0/6/130620197/1771612.pdf
    • http://veluntab.store/uploads/1/3/0/2/130270986/5100536.pdf
    • http://attiliosfarms.com/uploads/1/3/0/7/130738903/vumopazanazabu.pdf
    • http://mommygeekmg.com/uploads/1/3/0/7/130775475/nezana.pdf
    • http://skipstonepublishing.com/uploads/1/3/0/5/130539084/jewarawu_tulimulidetebot_lufawizaf_xewalado.pdf
    • http://cup054.com/uploads/1/3/0/6/130621135/24b2201aac2.pdf
    • http://phonenext.net/uploads/1/3/0/7/130739968/jovovopevajafemem.pdf
    • http://nuobeijinghotel-chinese.devsite-1.com/uploads/1/3/0/5/130589328/130589328.html#ecological+plaque+hypothesis+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004378.bin
30fa1b5d3e771a5245bc3e36f0cfcb006e037b6599179cf5efa3738a926d5a75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4378 8004 bytes

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