Malicious PDF — malware analysis report

Static analysis result for SHA-256 c545b7193dbf4210…

MALICIOUS

PDF

71.6 KB Created: 2021-03-02 16:32:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d9087039bddcfc3bfc07e0a73165c673 SHA-1: a9e7d454463febe817b3145dc57bbd7bd4d5be39 SHA-256: c545b7193dbf42101b898f27c57540bd3b0bb11b2dec9e14ab910f23bcfb16bf
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://golowaki.ru/award?keyword=what+is+the+sequel+to+london+has+fallen PDF link annotation
    • https://bevozuvegala.weebly.com/uploads/1/3/3/9/133999301/3a69248df61b1cb.pdfIn PDF document text
    • http://ru-dev.xyz/18821104400mh5et.pdfIn PDF document text
    • http://vinograd.io/dipoximijeiqo68.pdfIn PDF document text
    • http://sumovenelexefik.iblogger.org/how_to_check_ac_compressor_clutch.pdfIn PDF document text
    • https://jurulekoteg.weebly.com/uploads/1/3/4/7/134700509/nazutekad.pdfIn PDF document text
    • http://mutodute.22web.org/funomirijokosetarineta.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kovibu/difference_between_project_and_program_management.pdfIn PDF document text
    • http://sofijorube.rf.gd/binufo.pdfIn PDF document text
    • http://zaxesagujudiwa.epizy.com/how_to_type_the_international_phonetic_alphabet.pdfIn PDF document text
    • http://mukukukeban.rf.gd/51490146041.pdfIn PDF document text
    • http://devepovamijube.epizy.com/gikinizelozorom.pdfIn PDF document text
    • http://burafidofa.epizy.com/calentadores_solares_funcionamiento.pdfIn PDF document text
    • http://lalasajunes.rf.gd/6526860280.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/wigowosidu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD7 5036 bytes
SHA-256: 754a35cd4d28a62301cc87ffbf9c6a7e214a910c0d5d9dbef8514a4d2e327103
font_01_sfnt_off0000ee03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE03 10448 bytes
SHA-256: ce6e7a360bc024f0e2cad9433bd3f6766e54b9e9f63bdf5b623ca313ec17879c