Malicious PDF — malware analysis report

Static analysis result for SHA-256 b489e99cbde99fde…

MALICIOUS

PDF

40.6 KB Authoring application: QPDF
MD5: 1c948aa71f29f30695057ed8db870e36 SHA-1: 50526e05caa01d0cdfb5a3f3036d0d980e952be6 SHA-256: b489e99cbde99fdeeefdab5f576c48e1d5d24d01fc7cb6b5fdf3baf0978d6f1d
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The primary attack vector appears to be a link farm, with numerous embedded URLs pointing to external PDF files. These links are likely used to distribute phishing content or download further malicious payloads. 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://lloydstreeter.com/uploads/1/3/0/7/130776460/8153829.pdf
    • http://puertorican-bondlosses.com/uploads/1/3/0/7/130776605/24e3726be4d5.pdf
    • http://pinupanddance.com/uploads/1/3/0/6/130604369/d6d6b8daef.pdf
    • http://completecarechiropractictables.com/uploads/1/3/0/7/130738700/a72ec8966816.pdf
    • http://simonshotdogs.com/uploads/1/3/0/2/130289225/vegukugoxoke.pdf
    • http://mooregoodhairdays.com/uploads/1/3/0/7/130775350/rodavigopes-jirexudo-tenitowukajek.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/4/130488732/tuzokikiwejafo_wigomogiro.pdf
    • http://threadsofthewayfarer.com/uploads/1/3/0/2/130289478/xexiseripaz.pdf
    • http://akcab.com/uploads/1/3/0/7/130738973/71def897.pdf
    • http://bslartquilts.com/uploads/1/3/0/6/130621597/3704575.pdf
    • http://katrinadasilvaart.com/uploads/1/3/0/5/130550953/volaxuzot-tatudin-kapil-jeniwatimevum.pdf
    • http://lagosjobsite.com/uploads/1/3/0/3/130313224/miduredapivek.pdf
    • http://minimographics.com/uploads/1/3/0/6/130605190/8105bba1993.pdf
    • http://kelseyleon.com/uploads/1/3/0/7/130739150/fenuponupev.pdf
    • http://projectloon.net/uploads/1/3/0/4/130476078/sepuleginilim-gejuxemapax-zanosi-niwad.pdf
    • http://sfchampions.com/uploads/1/3/0/5/130540405/3773514.pdf
    • http://litigatingforchange.org/uploads/1/3/0/6/130604300/jilakitulugi.pdf
    • http://myzik-xit.site/uploads/1/3/0/2/130271167/f7b4f28604a403.pdf
    • http://mamascook.com/uploads/1/3/0/7/130739234/7691657.pdf
    • http://scottbrackenridgebuilders.co.nz/uploads/1/3/0/8/130813987/9304530.pdf
    • http://catandtie.com/uploads/1/3/0/4/130483875/kumexivitutewip-nujav-setemek-zuwaposivuzixum.pdf
    • http://platicus.net/uploads/1/3/0/6/130639646/4653548.pdf
    • http://thedevinediamonds.com/uploads/1/3/0/5/130550868/gumukovupok_mevuze_solitudew.pdf
    • http://faithful32x32.com/uploads/1/3/0/7/130775404/godikevezajir.pdf
    • http://coopersflamethrower.com/uploads/1/3/0/5/130590443/makidanazumuli.pdf
    • http://oakclass.com/uploads/1/3/0/3/130379061/130379061.html#free+short+reading+passages+for+4th+grade

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000394a.bin
c4e8673b5a327dd2db7088faa115878c5e123ade9cc1500b6890a33c26fda0f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x394A 8180 bytes