Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9cee61d604ac623…

MALICIOUS

PDF

47.0 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: 6b37816753943fb2f29647e8a0d5d3d7 SHA-1: af33b2ebb9dffea04f16897dc5c080a7e9b83e5f SHA-256: b9cee61d604ac62391681ea1e7ba896051581544f98798e00ae20d2a4da71331
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links pointing to external PDF files hosted across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. The document body itself is heavily obfuscated and does not provide clear user-facing text, but the heuristic firings strongly suggest a malicious intent related to link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://geomatch.net/uploads/1/3/0/5/130588266/dosokati.pdf In PDF document text
    • http://sweetwaternetworks.com/uploads/1/3/0/5/130544872/sufut_mireralebinow_wudufezupa.pdfIn PDF document text
    • http://vibrs.com/uploads/1/3/0/2/130288630/3285543.pdfIn PDF document text
    • http://premiumeconomyreview.com/uploads/1/3/0/7/130775952/fasulubetuxukojulim.pdfIn PDF document text
    • http://plantcityhomesforsale.net/uploads/1/3/0/5/130551554/8f80e163425b8f3.pdfIn PDF document text
    • http://singoutloudday.com/uploads/1/3/0/7/130775542/4025044.pdfIn PDF document text
    • http://trumpisfromuranus.com/uploads/1/3/0/8/130874510/pozulipakuwometavep.pdfIn PDF document text
    • http://emeryparksboutique.com/uploads/1/3/0/6/130604594/zipufawapoxan-bexemorerufu-toboboriniduwo.pdfIn PDF document text
    • http://e-learninganddesign.com/uploads/1/3/0/2/130271113/giwuza_dusojodoburex_vusizamosakir_zovenej.pdfIn PDF document text
    • http://www.dirianaru.com/uploads/1/3/0/6/130620484/mosorigegenimoj_sinitif_sowisejuf_lixaxonu.pdfIn PDF document text
    • http://digidansolutions.com/uploads/1/3/0/3/130313272/e86f68622e7e1fb.pdfIn PDF document text
    • http://litsair.com/uploads/1/3/0/6/130640141/70b92d8b.pdfIn PDF document text
    • http://gestionwebfarmacia.com/uploads/1/3/0/7/130776720/4f34ad26c0.pdfIn PDF document text
    • http://foradayoff.com/uploads/1/3/0/6/130605204/1713823.pdfIn PDF document text
    • http://exoticcutzformen.com/uploads/1/3/0/7/130739443/rizidileso.pdfIn PDF document text
    • http://mta-sts.mail.svp-ipsach.ch/uploads/1/3/0/5/130590532/tasamevufolorerome.pdfIn PDF document text
    • http://nhcohousing.org/uploads/1/3/0/2/130270867/xuduzamurewo.pdfIn PDF document text
    • http://jballsy.com/uploads/1/3/0/4/130477048/xaxibivonezada.pdfIn PDF document text
    • http://countryseasonsbnb.com/uploads/1/3/0/5/130588230/2473408.pdfIn PDF document text
    • http://letsgetreadytotravel.org/uploads/1/3/0/8/130814644/9305072.pdfIn PDF document text
    • http://www.ukerepublic.shop/uploads/1/3/0/6/130621900/dbde6a.pdfIn PDF document text
    • http://danbetophotography.com/uploads/1/3/0/7/130738814/8609962.pdfIn PDF document text
    • http://adamshumangeo.org/uploads/1/3/0/6/130639141/2f7bd057.pdfIn PDF document text
    • http://mermaidexplorers.com/uploads/1/3/0/6/130621208/jojeja.pdfIn PDF document text
    • http://www.maolspet262.com/uploads/1/3/0/6/130620991/4300740.pdfIn PDF document text
    • http://100kchallenges.stefanaarnio.com/uploads/1/3/0/8/130874591/130874591.html#aeroelasticity+bisplinghoff+pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

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_off00003c01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C01 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
font_01_sfnt_off00005331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5331 8020 bytes
SHA-256: a4c9cf84814a341a4cf25e613d79e6e7a63047fecf165ade580b15b62107626f

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