Malicious PDF — malware analysis report

Static analysis result for SHA-256 77f3d1a10d046bff…

MALICIOUS

PDF

73.2 KB Created: 2021-02-22 09:10:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9cc27d833c2617bc13415ff62766339c SHA-1: b5044477f51d988c70b7fb861bdcdd018c741a0d SHA-256: 77f3d1a10d046bffd19ffacdb4d689ecc5b3c2b3ead83dedb06addef5f4bd78a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=winter+dreams+worksheet+answers PDF link annotation
    • http://feelslike35.com/funny_laughing_sound_effects_free_download5bfme.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479921/normal_5ff10826cc271.pdfIn PDF document text
    • http://mosquito.codes/nisadomovafu9pdnm.pdfIn PDF document text
    • https://nunesevafarub.weebly.com/uploads/1/3/0/8/130874378/7656636.pdfIn PDF document text
    • http://idealsit.space/zanejeb7m62o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383577/normal_5fd160c871b8b.pdfIn PDF document text
    • http://fuckfrsky.com/264165485795sqlh.pdfIn PDF document text
    • http://detonic-buy.website/fragmentos_de_un_evangelio_apcrifo_jorge_luis_borgesfdfkq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385198/normal_600527cad29e6.pdfIn PDF document text
    • https://cdn.sqhk.co/xagunetoxa/UidjdvR/mother_earth_brewing_kinston.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384295/normal_5fd70fa845538.pdfIn PDF document text
    • http://idealslimitalia-ufficiale.site/konejawewuxusa2htz7.pdfIn PDF document text
    • http://olymptrade.buzz/how_to_open_a_brinks_lock_boxtxws8.pdfIn PDF document text
    • https://cdn.sqhk.co/xudevekelefe/hjDshbU/18340528300.pdfIn PDF document text
    • http://visionnew.xyz/romaxomemaxexivibolulunpn5v.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/mexavofezoxi/experience_certificate_word_format.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/wovukafapenakukedu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/gikivojureziboferabexemi.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/plural_proper_nouns_worksheets.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8F 5204 bytes
SHA-256: 8c03bdd3e53c76b171df4a283a0166289af708c0e20ee875da412db7d37d4e22
font_01_sfnt_off0000de2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2A 10412 bytes
SHA-256: 87745603796e292733f82c502fd438b839d0fb71581e30c90243a77a45eef58f
font_02_sfnt_off00010207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10207 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67