Malicious PDF — malware analysis report

Static analysis result for SHA-256 5530834612ff8ae9…

MALICIOUS

PDF

80.5 KB Created: 2021-02-17 13:48:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 78b39237f59c61942ebee0a8eb1ffed2 SHA-1: 0c84a1637c45b75f7f6502cb3e068edf77830b92 SHA-256: 5530834612ff8ae9e78fae19269831cc6a0d0d672cb9a94cb9f1e5f0d38098cb
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://jacksth.ru/123?utm_term=learning+spark+o%2527reilly+github PDF link annotation
    • http://smartbright.club/installing_transducer_on_minn_kota_power_drivef9xts.pdfIn PDF document text
    • http://samiter.22web.org/mcdonald_s_menu_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462345/normal_601bf2215a43e.pdfIn PDF document text
    • http://italiabeach.space/the_blood_mirror_epub_download672sz.pdfIn PDF document text
    • http://help-copyrighteamservice.com/57008368946rqt33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455387/normal_5fe384f15ad0c.pdfIn PDF document text
    • https://cdn.sqhk.co/tosijoxopum/hZhchh6/temple_of_the_aztec_escape_room_walkthrough.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/ZVia5ia/36953085445.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491925/normal_60067254e3f1e.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/ihjfVv1/tufivukapikom.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/tuzakifezara/android_1_robbery_bob_mod_apk.pdfIn PDF document text
    • http://newotev.rf.gd/99630619703.pdfIn PDF document text
    • http://fimumilixi.epizy.com/pipuwuneregupeledata.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/95797061881.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/tirolubisu.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_off0000fc35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC35 5360 bytes
SHA-256: 0662dd4fb301cceba10babac09f0cba0183415c134f91b1d8a2e79c8b76226a4
font_01_sfnt_off00010e7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7A 11440 bytes
SHA-256: 8fa57d941c0dd2361e1541700322c62bd25b40fcf73674777fb664e961a1492b