Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9862bab32253e35…

MALICIOUS

PDF

83.0 KB Created: 2021-03-30 15:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 77e474b052ca6db92c132f4eda1c4744 SHA-1: 2dab9efe0e9cdeab5415cf67436810ee4b001591 SHA-256: c9862bab32253e352b7335b9864dc38a71598920b5b8da76a579c7c09106eaf3
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many hosted on disposable domains, designed to redirect users to potentially harmful content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a link farm tactic, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/aws?utm_term=tecnicas+de+redaccion+que+es PDF link annotation
    • http://kevakigev.medianewsonline.com/74761303438.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483833/normal_605a787ee5847.pdfIn PDF document text
    • http://vasizazesunof.medianewsonline.com/peter_thiel_pitch_deck.pdfIn PDF document text
    • http://checkmycredit.info/best_international_finance_jobsfau4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378855/normal_600573ccda70a.pdfIn PDF document text
    • http://com-servers.online/nirumiremu7ieic.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368486/normal_5feeb11a02572.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489247/normal_5ff9282421c35.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/structure_de_la_cellule_procaryote.pdfIn PDF document text
    • http://idealicaitalia-official.site/what_causes_a_garage_door_not_to_close_all_the_wayhmtem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464720/normal_6026e9a216f69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f11e766c-e69d-408e-bf7b-2e4933a2ad88/anne_rice_memnoch_the_devil_audiobook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7e6994d-e237-45b3-bad5-8a6afb95b4a7/bobcat_s650_service_manual.pdfIn PDF document text
    • http://zaduzos.myartsonline.com/periodic_table_crossword_puzzle_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bef0e89-dfff-475e-9944-7a113deea007/dulamebujebevupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38dff459-388f-4898-b33e-8c868f1dfb0b/zofitexosunezepowuzirog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83297baf-9b96-40c5-9705-9735381558d9/georgia_state_drivers_ed_online.pdfIn PDF document text
    • http://degevojorak.myartsonline.com/pride_and_prejudice_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f040da0a-f502-4275-993e-aaf33b90454f/tojojavuganenepanafitig.pdfIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/absceso_bartolino_tratamiento.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b5e8ee6-6c88-4d96-bb46-d9ea47745f8b/zadotifuvujamuwumavaweb.pdfIn PDF document text
    • http://wegorabeg.atwebpages.com/kugadusakarelafenojavo.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_off0001028d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028D 4976 bytes
SHA-256: a2b86951db197e97f6dda7906d7ac168b7f572bb9f9ef6ba720a42ea8fb6d934
font_01_sfnt_off00011380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11380 13420 bytes
SHA-256: ed53d8c808b67b93c81f2472f8c57c0606e073a9031e6dffcc7aa42a4f1adc40

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