Malicious PDF — malware analysis report

Static analysis result for SHA-256 44045bfac5fb05ac…

MALICIOUS

PDF

68.3 KB Created: 2021-01-31 23:15:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4042d677e717bf98ec86f4f5765b071d SHA-1: c4c5343398c36caeb5f2a73b542764f315841aa7 SHA-256: 44045bfac5fb05ac1bc843e892574bada511f3c042a9b9cf6d6d7fbbce8cbe50
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://jottigo.ru/aws?utm_term=adobe+audition+cc+2015++full PDF link annotation
    • https://cdn.sqhk.co/mojikeke/aiaDWqy/smartness_word_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/jozazixefuf/e48jagj/wosabejaleralazoze.pdfIn PDF document text
    • https://cdn.sqhk.co/rutisifelom/ZkPPgeS/small_business_startup.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/Xjhichj/homemade_raspberry_jam_no_sugar.pdfIn PDF document text
    • https://mafidusat.weebly.com/uploads/1/3/4/1/134109097/zajigofekagizeso.pdfIn PDF document text
    • http://tuimag.ru/xidofetp07s.pdfIn PDF document text
    • https://kujegafibez.weebly.com/uploads/1/3/4/2/134265926/3606649.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/ehhjehi/80080466323.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/cgciiia/underwater_survival_simulator_hack_mod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xagazusapikim.epizy.com/vuzulewedotirisutemen.pdfIn PDF document text
    • http://jukikusikodopom.epizy.com/fogirutafujafefetozasu.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/vsepr_shape.pdfIn PDF document text
    • http://sobikunukozi.rf.gd/setixelosijixo.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/dvd_cd_rom_drive_windows_7.pdfIn PDF document text
    • http://wobuwikag.epizy.com/5549701304.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_off0000cf28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF28 5320 bytes
SHA-256: 1149b7845586b4eefd900ebf21865fd9b19ed67d3852b3aa7649c7d162e5bd0e
font_01_sfnt_off0000e166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE166 10324 bytes
SHA-256: 92f77d1b6e6e77ed56beacf87d8862d99b5c8b5bbbc4eb0e7e29aba166392668