Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddb23cf368ac761…

MALICIOUS

PDF

55.0 KB Authoring application: Smallpdf Desktop First seen: 2021-02-23
MD5: 7a3489e6d8e47bf4f3215292e8edb2d4 SHA-1: cfac9ca918b27a818943406f59e43734138a9681 SHA-256: 3ddb23cf368ac761c07c3cec2b563364484bd25392dd80a8914884e06da9d8f0
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://len.seovtop.ru/uploads/2020/01/27/wavonaxobiwisevabib.pdf In PDF document text
    • https://zovifojiw.weebly.com/uploads/1/3/0/3/130324030/df94785b17309.pdfIn PDF document text
    • http://incarnatagame.com/uploads/1/3/0/5/130588272/024592e4efda.pdfIn PDF document text
    • http://gumub.legitimateparttimeworkfromhome.com/uploads/2020/01/29/8c734eb294e6d.pdfIn PDF document text
    • http://vepurufuno.opros-russia.online/uploads/2020/01/28/vuvosilunopid.pdfIn PDF document text
    • http://wub.in-op.fun/uploads/2020/01/28/16b3fa1.pdfIn PDF document text
    • https://buvazetogasefo.weebly.com/uploads/1/3/0/5/130539109/mewud-zofibanavaf.pdfIn PDF document text
    • http://tkd-cska.ru/uploads/2020/01/27/webapezared.pdfIn PDF document text
    • http://formacion-psicosocial.com/uploads/2020/01/28/585cd1b8be1a.pdfIn PDF document text
    • http://fuj.dns-oldi-nix.info/uploads/2020/01/27/bd60b346e9821.pdfIn PDF document text
    • https://sekinenurasovem.weebly.com/uploads/1/3/0/5/130589014/2b2dfcbb20545f.pdfIn PDF document text
    • http://fapapev.espace-clientsv3-0range.com/uploads/2020/01/28/7202496.pdfIn PDF document text
    • http://nedopumij.bp-bas.com/uploads/2020/01/28/6813218.pdfIn PDF document text
    • https://limibolom.weebly.com/uploads/1/3/0/3/130323889/vepakajonimov.pdfIn PDF document text
    • https://betagegotexefi.weebly.com/uploads/1/3/0/5/130588654/5ba81b274a32.pdfIn PDF document text
    • http://healthnotes.tech/uploads/2020/01/28/6cd9d3d4.pdfIn PDF document text
    • http://sanijok.kuprygin.com/uploads/2020/01/27/rirowolopusaxe-jawoguvosupajog-vanilom-muvorudimop.pdfIn PDF document text
    • http://kenna-kitchen.com/uploads/1/3/0/5/130551330/130551330.html#ekladata+romance+adulte+pdfIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1867 11072 bytes
SHA-256: 735cfd138efd70cad16b12b4fc8dcd31f200b8c2d67161d81fb2396e0c3289e8
font_01_sfnt_off00009c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C17 2732 bytes
SHA-256: 50224c6c483bfa86a10f62efd7baa2c756f8036c0a911ebd537387e21b2fb6f3

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