Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c4a83be6ed8dc7…

MALICIOUS

PDF

68.7 KB Created: 2021-03-03 06:52:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 34eb1a64916fda5f84cb481ebd0a7090 SHA-1: 622db74709fe3dc0359d4f95fc260f0e25ab7360 SHA-256: f9c4a83be6ed8dc7f5f6e500039f61598360179e3eed60c1ad03c1665a59ebb5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://jottigo.ru/award?keyword=beyond+enemy+lines+remastered+ps4+test PDF link annotation
    • http://community-day.ru/one_summers_day_ukulele_tabsk9qkt.pdfIn PDF document text
    • https://gatodagimisosog.weebly.com/uploads/1/3/1/3/131379801/tukasorow_rupugoguwis_fusotakex_jipevag.pdfIn PDF document text
    • https://dubibezu.weebly.com/uploads/1/3/1/4/131453247/menivonosa-fuvigewa-pesizopa-solate.pdfIn PDF document text
    • https://xijadusulotogu.weebly.com/uploads/1/3/6/0/136089771/469197.pdfIn PDF document text
    • https://cdn.sqhk.co/mivoteloxip/jWKhsor/mopesokasazibuvapur.pdfIn PDF document text
    • https://xovadesunuzavam.weebly.com/uploads/1/3/4/4/134479636/e104eba.pdfIn PDF document text
    • http://detonic-ro.website/pukolobufeduzomj.pdfIn PDF document text
    • http://lesantyqas.online/14210684841op0ng.pdfIn PDF document text
    • http://yoganchik.space/different_types_of_air_conditionerszjka3.pdfIn PDF document text
    • http://zdorovienashevse.xyz/rpg_android_offline_mod9lh5m.pdfIn PDF document text
    • http://loveworld.club/bts_bring_the_soul_movie_free90uh8.pdfIn PDF document text
    • https://lurenejaxerugu.weebly.com/uploads/1/3/4/7/134728533/torev.pdfIn PDF document text
    • http://khareedforosh.com/storyboarder_shot_generator_objects22i4o.pdfIn PDF document text
    • https://bufuxilanu.weebly.com/uploads/1/3/4/4/134402831/vatasebib-domorevede-xumatebi-kijumo.pdfIn PDF document text
    • https://kivogumit.weebly.com/uploads/1/3/1/0/131070776/7775309.pdfIn PDF document text
    • http://souve.me/physics_principles_with_applications_7th_edition_solutions17osa.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/bodajaku/fukabavurejoni.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/59860602192.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/13607616522.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/82766074669.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/leonardo_da_vinci_anatomist.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_off0000d0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E6 5344 bytes
SHA-256: c63157a901d9508d2d0002a19de4075ee324b492dd55511bb3e101096484ff1d
font_01_sfnt_off0000e30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30B 10148 bytes
SHA-256: 4e8baeb86d1b12586d72896605a17df9b27a22f30176b0cc86d66eaa3147a909

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