Malicious PDF — malware analysis report

Static analysis result for SHA-256 184c637198795ecb…

MALICIOUS

PDF

71.5 KB Created: 2021-03-03 03:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b031d7f66bb9c5d43cf0bdd47034bd8e SHA-1: 2d8fffd484ce6abdb3d4416a2ac4f676af654915 SHA-256: 184c637198795ecb3d17bd7caa976e110646fd657973e6a30074745d698619dd
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://dugedepap.ru/award?keyword=nortel+networks+cancel+call+forwarding PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368969/normal_5fea353a56cf2.pdfIn PDF document text
    • https://cdn.sqhk.co/retagigimusa/dGyjie5/stuntman._io_bike_stunt_races.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/cAihkja/fotajopuni.pdfIn PDF document text
    • http://piwakere.iblogger.org/benofokiro.pdfIn PDF document text
    • http://reborasiruv.iblogger.org/34477471804.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/9ibEhRq/the_last_house_on_the_left_imdb.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/LiaTUhd/ikea_black_friday_2018_canada_flyer.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/ePCmQI7/janurex.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/jbrWm7p/hydro_dipping_film_suppliers_in_south_africa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://widepidaba.atwebpages.com/zipero.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/tevokago.pdfIn PDF document text
    • http://jumirasex.epizy.com/wedding_card_template_word_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/98698972607.pdfIn PDF document text
    • http://jukiwifid.rf.gd/lord_krishna_quotes_bhagavad_gita_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/base_de_datos_distribuidas_mysql.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/bootstrap_4_form_field_width.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_off0000dbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE6 5316 bytes
SHA-256: 56fcec09a19c16f94f4ba4fda92db644d3f4ab55ea78e6d190df72817469f7ef
font_01_sfnt_off0000ee24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE24 10140 bytes
SHA-256: d22b229f426520ef0f3d7dbbecf5db4653c3f0cb2d3c0c26a4868282b8e9d389