Malicious PDF — malware analysis report

Static analysis result for SHA-256 9df15b87c43a1980…

MALICIOUS

PDF

41.8 KB Authoring application: QPDF First seen: 2020-09-24
MD5: 1577add27e94685da3b8dad61f4d6ff1 SHA-1: ab61738855f5380e3248a545ab3a5a1164ebeb85 SHA-256: 9df15b87c43a1980ff9920b8a17b114018f9e28c01827a77718483f9ed3c7d52
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The heuristic 'PDF_SEO_LINK_FARM' directly points to the attack pattern of creating a link farm, with the first URL being http://timothydlthompson.net/uploads/1/3/0/8/130814161/cebcd6fa.pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://timothydlthompson.net/uploads/1/3/0/8/130814161/cebcd6fa.pdf In PDF document text
    • http://janstravelandcruise.com/uploads/1/3/0/3/130323235/livogi.pdfIn PDF document text
    • http://mindandhomeinsurance.com/uploads/1/3/0/3/130323260/lewiruvi.pdfIn PDF document text
    • http://www.amoerickman.com/uploads/1/3/0/6/130621928/gonilepom_nefap_zipolupegujekiw.pdfIn PDF document text
    • http://llnoble.net/uploads/1/3/0/8/130814575/nunulalu_durufegaxob_puborelogom_metamegivanon.pdfIn PDF document text
    • http://dckninternational.com/uploads/1/3/0/5/130551033/kipaba.pdfIn PDF document text
    • http://www.vaultheistgeelong.com.au/uploads/1/3/0/5/130551922/bijamajokunumoji.pdfIn PDF document text
    • http://maxsocialsecurityforlife.com/uploads/1/3/0/7/130738933/folidaguzegode-gifimur.pdfIn PDF document text
    • http://samuelchazalmartin.com/uploads/1/3/0/6/130605017/nutof.pdfIn PDF document text
    • http://www.floorexpertslimited.com/uploads/1/3/0/2/130291575/bebomataxejo.pdfIn PDF document text
    • http://74-123-73-223.mgwnet.com/uploads/1/3/0/2/130289466/newagolejutaton-pagofozobotob.pdfIn PDF document text
    • http://upwholesaleflooring.com/uploads/1/3/0/6/130603692/6f94cc.pdfIn PDF document text
    • http://brentmichaelchow.com/uploads/1/3/0/2/130288875/4720871.pdfIn PDF document text
    • http://motivatedqueen.com/uploads/1/3/0/6/130639165/zovegipipafijil_bepuvodowane.pdfIn PDF document text
    • http://mysteryshoppingonlinejob.com/uploads/1/3/0/5/130539599/metarifabugiliz.pdfIn PDF document text
    • http://besttreeservicememphis.com/uploads/1/3/0/2/130270804/naxopolafufevub_pivumaf_ganagipez_junolesejok.pdfIn PDF document text
    • http://beccabecca.shop/uploads/1/3/0/6/130639275/duxepuxezeleledufawu.pdfIn PDF document text
    • http://digitalfoxagency.com/uploads/1/3/0/6/130604074/83849eeb.pdfIn PDF document text
    • http://access-acumen.com/uploads/1/3/0/8/130815097/2a27f5aefb59.pdfIn PDF document text
    • http://www.klimb4kidz.org/uploads/1/3/0/3/130379164/1862594.pdfIn PDF document text
    • http://myprizeonline.com/uploads/1/3/0/4/130476493/lokarilozaremopo.pdfIn PDF document text
    • http://5pointauto.com/uploads/1/3/0/7/130739557/130739557.html#math-drills.com+adding+mixed+fractionsIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
🗂 Part of campaign: adenexpress.com 7 samples

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_off000035ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35EE 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea
font_01_sfnt_off000041c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41C8 8008 bytes
SHA-256: e753dda65604936f9bf031cd91f0759e49315e284b8a756b90902a8dde37ee56

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