Malicious PDF — malware analysis report

Static analysis result for SHA-256 54c7cf606ff31f77…

MALICIOUS

PDF

73.6 KB Created: 2021-02-21 23:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 49c105a112cab7679e3a19de564e0eea SHA-1: f467994c3950b5f4b699af2191367e67bf872b7f SHA-256: 54c7cf606ff31f77b1c8da044aa284903e04d2f814b158b2aa2cf3c73b2e5506
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://druttle.ru/wb?keyword=how%20quickly%20does%20priority%20mail%20ship PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417830/normal_601e32b595a13.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/9-6_geometric_probability_practice_worksheet_answer_keywc7tj.pdfIn PDF document text
    • http://sobakin.space/joindre_2_en_unnrs4m.pdfIn PDF document text
    • http://giveaway2020.info/busuu_english_apk2cwep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375342/normal_5ff5a63b75a64.pdfIn PDF document text
    • http://onlinesos.tech/detukotudu518.pdfIn PDF document text
    • http://zazonowipudu.66ghz.com/best_body_scanner_app.pdfIn PDF document text
    • https://cdn.sqhk.co/gaduwifawide/jdRhehh/best_warriors_game_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/itzP0GF/my_talking_tom_friends_game_download_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/ejaiekQ/xufiwu.pdfIn PDF document text
    • https://cdn.sqhk.co/jisaside/73rjh2d/slots_casino_games_online_fruit_cocktail.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378160/normal_600301507cac6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://japorivexasore.epizy.com/magic_flute_song.pdfIn PDF document text
    • http://porapasegunan.epizy.com/13849102006.pdfIn PDF document text
    • http://kufuravolej.rf.gd/alphabet_letter_templates_free_printables.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_off0000e108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE108 5656 bytes
SHA-256: cf5ab9608018e9f9736f7494d45277f2362b9848f5e0083d7fd27ca00150a5db
font_01_sfnt_off0000f42c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42C 11028 bytes
SHA-256: 5351c4410cce45b8841a26227a1496e4fe85e6be66014203dec4f68b4cc99d09