Malicious PDF — malware analysis report

Static analysis result for SHA-256 97dd35305585f3ff…

MALICIOUS

PDF

76.2 KB Created: 2021-03-14 16:10:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 8e36e3b16dadee2746904294183eb1fe SHA-1: b0e1ca4c7bcb605f4c4d14db349d945ca89e766b SHA-256: 97dd35305585f3ff8caba0d0d840c10e971a8c6d42a48f753854442fb964f595
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document, potentially leveraging embedded JavaScript for malicious actions.

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://baarspo.ru/123?utm_term=cheap+android+watch+reviews PDF link annotation
    • https://cdn.sqhk.co/vulovosovem/jkgih96/canadian_electrical_code_conduit_fill_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/rolaravez/ibiehhe/online_clothes_shopping_apps_usa.pdfIn PDF document text
    • https://fopaxiguvoxux.weebly.com/uploads/1/3/4/5/134584781/3939291.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/U8ehhkA/carboprost_davis_drug.pdfIn PDF document text
    • https://nijasofefovo.weebly.com/uploads/1/3/4/7/134719995/2870862.pdfIn PDF document text
    • http://tuderoba.getenjoyment.net/21331034529.pdfIn PDF document text
    • http://fodekofuxuvum.sportsontheweb.net/korg_electribe_2_sampler_manuale_italiano.pdfIn PDF document text
    • https://cdn.sqhk.co/rapigufagi/pU7hgaz/latigos_de_cuero_trenzado.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/a7mzpje/10776340042.pdfIn PDF document text
    • http://girepodemaz.getenjoyment.net/loneliness_definition_psychology.pdfIn PDF document text
    • https://joworuzofoluj.weebly.com/uploads/1/3/2/6/132683209/labuzo_tovuvuvulibi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e0bfa911-60eb-4c53-bd8d-ceec25156dfb.filesusr.com/ugd/0a052f_76c76a067d774bfb87c4178779958fa1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/zilufuratuwaf.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/bodoni_book_italic_font.pdfIn PDF document text
    • https://9a89a7da-ede3-42eb-a537-7416be21eb2d.filesusr.com/ugd/aaaf79_b75ac8e50fa541578745579f665ae54f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/49946418445.pdfIn PDF document text
    • https://dacf5b84-f80e-4bd8-bb7f-22aad20a1cd8.filesusr.com/ugd/285be4_2cf540c95dde465fa536c2d19dbcb95f.pdf?index=trueIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_1bf2638116224dccbefbd7287c74e38b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/waduzirader/abp_news_app_free.pdfIn PDF document text
    • https://e0f910ba-f4aa-4d6b-87f6-24d78cda99ab.filesusr.com/ugd/cc15ef_7972f090164c4f4690641888bdf747d2.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2A 5188 bytes
SHA-256: 8a4d37a35ea4a831c2aa3a4d58705d3f32915f1f2428604257dc044a9479b018
font_01_sfnt_off000100db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DB 10212 bytes
SHA-256: cd741696a7be0b5975764ed77878eceb76b644380efafa6c9f23e7e3a4211ab7

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