Malicious PDF — malware analysis report

Static analysis result for SHA-256 a778ec47e2673819…

MALICIOUS

PDF

44.1 KB Authoring application: Nitro PDF First seen: 2020-09-07
MD5: c9cb4f073db961a81612932002a726d2 SHA-1: e1b6d6af6ac6df0029434a833084598958ee24b4 SHA-256: a778ec47e26738199a81478483602fb205e8aa0d0822265f4341ddddc11a4682
152 Risk Score

Malware Insights

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

This PDF file was flagged by multiple detection engines, including ClamAV and a machine learning classifier, as malicious. The primary indicator is the presence of a large number of external PDF links, suggesting a link farm used for distributing malicious content or phishing. The embedded document body text appears to be corrupted or malformed, providing no direct clues to the specific lure.

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://achillesstravoravdis.com/uploads/1/3/0/7/130738635/gegojizokerura_gepijurelefag_wojel_gojem.pdf In PDF document text
    • http://www.elliotfitzcreative.com/uploads/1/3/0/5/130588688/1ce7413.pdfIn PDF document text
    • http://beccaandbill.com/uploads/1/3/0/4/130489159/watepilow-fomenasulatumek.pdfIn PDF document text
    • http://petrocartaenergy.com/uploads/1/3/0/4/130478307/wufukevefamunub-benafifulida-fajesawufusovu.pdfIn PDF document text
    • http://tdf20years.com/uploads/1/3/0/7/130740206/fofowilijukomipew.pdfIn PDF document text
    • http://greyowlproperties.com/uploads/1/3/0/6/130639980/a163b56c6c.pdfIn PDF document text
    • http://bud-spencer.org/uploads/1/3/0/2/130270955/1c4f2b397.pdfIn PDF document text
    • http://musiccitypetpartners.net/uploads/1/3/0/5/130551299/nepikagid.pdfIn PDF document text
    • http://meridianspire.com/uploads/1/3/0/5/130539049/946c8d6d.pdfIn PDF document text
    • http://assentive.net/uploads/1/3/0/7/130775134/wuvadafuguka.pdfIn PDF document text
    • http://sistemadecrecimiento.com/uploads/1/3/0/7/130738506/magenevuwuk.pdfIn PDF document text
    • http://teamshop.com/uploads/1/3/0/7/130739278/tuvomeki-tidiwibudunaga.pdfIn PDF document text
    • http://nicolekruzel.com/uploads/1/3/0/8/130814782/150b34.pdfIn PDF document text
    • http://stehly2020.org/uploads/1/3/0/5/130588415/6598703.pdfIn PDF document text
    • http://desvosges.com/uploads/1/3/0/6/130621557/1590394.pdfIn PDF document text
    • http://shabazztribe.com/uploads/1/3/0/2/130289304/lanilisafokabuzudofa.pdfIn PDF document text
    • http://advertisingsa.com/uploads/1/3/0/5/130544230/15f3da047a.pdfIn PDF document text
    • http://foureyesproofing.com/uploads/1/3/0/5/130589088/runiru.pdfIn PDF document text
    • http://musicboxinvites.net/uploads/1/3/0/7/130775413/5881332d748.pdfIn PDF document text
    • http://noramanca.com/uploads/1/3/0/5/130588849/2975830.pdfIn PDF document text
    • http://www.squar3d.net/uploads/1/3/0/6/130603955/62cada.pdfIn PDF document text
    • http://cubcountry.org/uploads/1/3/0/8/130814984/moxigalo-pabuguzawanopil-mixobusamufeja.pdfIn PDF document text
    • http://pinnb.slpny.com/uploads/1/3/0/6/130604028/130604028.html#albert+camus+les+justesIn 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

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_off00003a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A51 2652 bytes
SHA-256: e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
font_01_sfnt_off000046e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46E8 10224 bytes
SHA-256: 8fcbc6db0732ed30d286ef98cdb2320bff52685b8f4f9cd164c97798af3fc877

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