Malicious PDF — malware analysis report

Static analysis result for SHA-256 554be5f458ea9352…

MALICIOUS

PDF

110.4 KB Created: 2021-03-16 08:29:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0da570b050139376497da137137a18df SHA-1: 7ed3053aa34ac30631d09309c01272cd95ea3130 SHA-256: 554be5f458ea935283b149bfa8685bf88e5a8cd1244fab8e4c7f1f2c558e0f86
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to obscure the true destination. One prominent URL, 'https://ponafet.ru/wix?keyword=downloadprovider.apk+%25D1%2587%25D1%2582%25D0%25BE+%25D1%258D%25D1%2582%25D0%25BE', suggests an attempt to trick the user into downloading an Android application. The document body, though heavily obfuscated, contains references to 'Downloadprovider.apk' and 'wkhtmltopdf', further supporting the payload delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/wix?keyword=downloadprovider.apk+%25D1%2587%25D1%2582%25D0%25BE+%25D1%258D%25D1%2582%25D0%25BE PDF link annotation
    • http://dajexori.mypressonline.com/free_california_residential_lease_agreement_form.pdfIn PDF document text
    • http://zimezobot.getenjoyment.net/smartboard_exchange_painting.pdfIn PDF document text
    • http://laketofetujeso.medianewsonline.com/didunuzutitutodizinev.pdfIn PDF document text
    • https://bonopabugo.weebly.com/uploads/1/3/4/5/134581776/bitejizomiruzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421365/normal_601b01c403fdb.pdfIn PDF document text
    • https://pojekemo.weebly.com/uploads/1/3/4/4/134469054/tozojokutaxoluxaze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455659/normal_60194c0fd1271.pdfIn PDF document text
    • https://nokafixawawi.weebly.com/uploads/1/3/1/6/131606940/giroguziniv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_604d31fdaa6e4.pdfIn PDF document text
    • http://nurigoluda.mygamesonline.org/moorish_literature_noble_drew_ali.pdfIn PDF document text
    • http://xiruzox.mygamesonline.org/98413599507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453117/normal_6010e27cb73d0.pdfIn PDF document text
    • http://wodedutipif.medianewsonline.com/59619168219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405194/normal_5fe961f33c4bd.pdfIn PDF document text
    • http://tezijexipilimo.getenjoyment.net/how_to_use_capresso_burr_grinder.pdfIn PDF document text
    • http://fakurivevid.scienceontheweb.net/nowogopamaselipulexaro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuzuxutetug.atwebpages.com/risk_management_process_in_construction.pdfIn PDF document text
    • http://leparitupoxow.onlinewebshop.net/28150654008.pdfIn PDF document text
    • https://8eeb1f0a-0cdd-4c66-98a4-83777b49fb54.filesusr.com/ugd/64f9d2_1a26be96d3534a1292284b9af722b621.pdf?index=trueIn PDF document text
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_fac328392a234612a932cea489f81818.pdf?index=trueIn PDF document text
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_675fabd67b48433b88e30a3195e6d6e8.pdf?index=trueIn PDF document text
    • http://lutepotazor.onlinewebshop.net/paregoturizawamaf.pdfIn PDF document text
    • https://a62e46b8-d933-4087-892c-e5439cec6991.filesusr.com/ugd/e9cba9_5c8bda318f704c35aba7c4d3f2c5f3ec.pdf?index=trueIn PDF document text
    • http://jotudokizer.onlinewebshop.net/academic_essay_topics.pdfIn PDF document text
    • https://02687da8-bf2b-436b-a8ca-82c6e04513a5.filesusr.com/ugd/e48f8a_9a7c2315c2514d9a8058dc8073383502.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_off00016368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16368 5388 bytes
SHA-256: 058d8d29dfe1459f34e53673bce7652a425b65212d107f494e8b702a28384103
font_01_sfnt_off000175b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x175B4 17096 bytes
SHA-256: d6db979794b877c14f587ed2536aa834bdb669e7c4f171867986196473da8db7