Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3f3b45a888b605d…

MALICIOUS

PDF

61.4 KB Created: 2021-02-21 20:45:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 58709b4902635efcf46e8f3e4064be77 SHA-1: 3127b5839382b615eb9a4aab61d338d72933e38b SHA-256: c3f3b45a888b605d34e8040701d96861813cd37a6a0a4ce0d080df1649450bd4
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://jottigo.ru/wix?keyword=timex+clock+radio+manual+t231y PDF link annotation
    • https://cdn.sqhk.co/natokaze/dGhbVhh/clay_craft_ideas_for_toddlers.pdfIn PDF document text
    • http://alex-chekalev.com/unveiling_riven_mods_guideflriq.pdfIn PDF document text
    • http://strahuemsya.info/que_es_un_bosquejo_en_una_investigacionir699.pdfIn PDF document text
    • http://ifeelgood.club/little_mermaid_medley_sheet_musicp7mgc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382952/normal_6007459fd4402.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389585/normal_5febfdb94a9b5.pdfIn PDF document text
    • http://joici.xyz/saxububojevnuzyr.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutazomaga/Liihfhe/kenaxuwepuvuxuresunelufe.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/sQgdsEg/reverse_camera_reverse_video_iphone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367922/normal_5fedf582bd4cd.pdfIn PDF document text
    • http://my-favshopf.online/jopimagulutigundwtl.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/ijbI4hl/71972064643.pdfIn PDF document text
    • https://cdn.sqhk.co/zekafomaze/Jhfhg5E/31340790639.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/thfdjjZ/rotudapapunekununi.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/farokof/66413680510.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/72571671147.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/gopomegijijus.pdfIn PDF document text
    • http://rewifavad.epizy.com/6168666032.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/2nd_grade_language_arts_skills_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB58F 5440 bytes
SHA-256: bee71aae863252ceebf0d51c6b61483f19b33544fb27c577c2f0195ddcfd5df5
font_01_sfnt_off0000c80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC80B 9524 bytes
SHA-256: fc23c0b2f8d112166188374da2e4918a385449598dec27aaa7f2f9bd5ab50066