Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3cad20afdbb680e…

MALICIOUS

PDF

80.4 KB Created: 2021-03-22 02:46:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c709ee19084e24d2e0820f97a4b23390 SHA-1: 242940b215b9153ca22377e6abd185d6d76a3418 SHA-256: a3cad20afdbb680eac0ed1c50c7e9e36a36f0f6af20491893e8f1dd3a04ba212
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. It contains numerous embedded URLs, two of which are particularly suspicious: 'https://ponafet.ru/123?utm_term=history+of+islamic+art+and+architecture+pdf' and 'http://reduslim-italiaoficial.site/53569138376a1ibh.pdf'. The PDF's structure and the presence of these links suggest it is designed to redirect users to potentially harmful websites, likely for phishing or malware distribution.

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://ponafet.ru/123?utm_term=history+of+islamic+art+and+architecture+pdf PDF link annotation
    • http://reduslim-italiaoficial.site/53569138376a1ibh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_6037050672856.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/12396456529.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/precalculus_free_download.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/the_bfg_movie_trailer_2016.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485703/normal_6002f3fc58807.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/jgh8ZbI/81287309612.pdfIn PDF document text
    • https://cdn.sqhk.co/goduwonon/j8lkaiB/trail_climb_mod_apk_unlimited_money.pdfIn PDF document text
    • http://ipai.online/how_do_you_prepare_for_a_steering_committee_meetinghhmoc.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/fB7FRvo/gexukoxenaxenugujom.pdfIn PDF document text
    • http://sreda.city/83567932230h4r8y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://19e6fc83-c281-4d06-93fd-e8b16a02b90a.filesusr.com/ugd/ce5d00_51bd39d6667a4ed294d7b77864d12843.pdf?index=trueIn PDF document text
    • http://dexadusoxeb.atwebpages.com/benthic_macroinvertebrates.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/black_and_decker_spacemaker_coffee_maker_installation_instructions.pdfIn PDF document text
    • https://305aa2e3-e1d2-413d-aa2e-f1bb83d03ded.filesusr.com/ugd/92ee2b_fa5a4337043548aabf1e100f35c780ea.pdf?index=trueIn PDF document text
    • https://83372c7a-1065-4b07-8284-b64562b46e84.filesusr.com/ugd/035489_9df339047d6542c09480555e0272662a.pdf?index=trueIn PDF document text
    • https://85fc0914-20e3-4f1c-be8c-de7e6f89f47e.filesusr.com/ugd/a44510_81373311a50f48899e8a4401484acfd1.pdf?index=trueIn 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_off0000fd44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD44 5456 bytes
SHA-256: 4581916798d63efa50b00a1b5f6aafc428bce0268a357ce52f812df988b832f6
font_01_sfnt_off00010fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAE 11036 bytes
SHA-256: b407e9188f5e9606fb5b51b064fd39214904d3e3d5aa981a0252d1c818845a22

Open this report in the interactive analyzer, or submit your own file for analysis.