Malicious PDF — malware analysis report

Static analysis result for SHA-256 99d9c20578767ef4…

MALICIOUS

PDF

52.7 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: fd760201e1270fb24d6319ef9c943be3 SHA-1: 53f78bf470161ee0ee470d51a2acfe4c02982ea2 SHA-256: 99d9c20578767ef42213da99a2bf76ef16927a07f636faec316f3b23abf06230
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains, indicative of a link farm or redirection scheme. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly suggest malicious intent, likely phishing or traffic redirection. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://nanascountrystore.com/uploads/1/3/0/6/130604494/zugukovo.pdf In PDF document text
    • http://30upahead.com/uploads/1/3/0/5/130590208/mosidike.pdfIn PDF document text
    • http://bluefinmiddletonma.com/uploads/1/3/0/6/130639300/nubude_javubawu_subamine.pdfIn PDF document text
    • http://melaniegarunay.com/uploads/1/3/0/2/130289793/1b408f8210af1.pdfIn PDF document text
    • http://dream-job.site/uploads/1/3/0/6/130621708/gojekuvozogobovolu.pdfIn PDF document text
    • http://resurrectionoutdoors.com/uploads/1/3/0/5/130546977/dariwi.pdfIn PDF document text
    • http://curerecords.net/uploads/1/3/0/6/130621182/dudajemitujejologil.pdfIn PDF document text
    • http://calhouncountywaspsandflies.org/uploads/1/3/0/6/130621682/fda77be16a979.pdfIn PDF document text
    • http://obrothersdetailing.com/uploads/1/3/0/5/130550858/fdcf5045d.pdfIn PDF document text
    • http://oliveraconst.com/uploads/1/3/0/2/130287317/433316.pdfIn PDF document text
    • http://ilovesmiley.net/uploads/1/3/0/3/130379769/1677787.pdfIn PDF document text
    • http://nashvillefoodandfun.com/uploads/1/3/0/5/130552043/7770594.pdfIn PDF document text
    • http://one21i.com/uploads/1/3/0/4/130476141/wimezidofi.pdfIn PDF document text
    • http://theluckywood.com/uploads/1/3/0/4/130436482/jijim-rafunugizixi.pdfIn PDF document text
    • http://scentedpens.com/uploads/1/3/0/6/130604637/mumanutiluvosi.pdfIn PDF document text
    • http://appel-stores.shop/uploads/1/3/0/3/130313525/fuxuxiribe.pdfIn PDF document text
    • http://ninaceledonio.com/uploads/1/3/0/3/130313632/c7742.pdfIn PDF document text
    • http://galenetics.com/uploads/1/3/0/2/130289021/2512935.pdfIn PDF document text
    • https://wikixajuv.weebly.com/uploads/1/3/0/5/130539881/c6cc54c1.pdfIn PDF document text
    • http://thorntonheathcricket.co.uk/uploads/1/3/0/5/130589161/8e1d26566598.pdfIn PDF document text
    • http://neverstripaflooragain.com/uploads/1/3/0/6/130639347/d8224f52f3c3.pdfIn PDF document text
    • http://myownbank.co.uk/uploads/1/3/0/5/130541272/fijumovolaje-vojipavuvop.pdfIn PDF document text
    • http://shoppivotalchocolates.com/uploads/1/3/0/2/130274322/tonel_jarexutupo_mewudi_mepabuxujibopox.pdfIn PDF document text
    • http://mybestpets.weebly.com/uploads/1/3/0/6/130620972/2366898.pdfIn PDF document text
    • http://5pointauto.com/uploads/1/3/0/6/130639998/130639998.html#nasa+rocketry+websiteIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1713 8680 bytes
SHA-256: a565e7259d75acdf55cbdd04e6062ee34255e66bdbe8c0517d90fd21098214ab
font_01_sfnt_off000086d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D9 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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