Malicious PDF — malware analysis report

Static analysis result for SHA-256 c005ac7c74d71f5c…

MALICIOUS

PDF

76.7 KB Created: 2021-03-12 12:42:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bc466dce2125a285929ec4b13fa25a11 SHA-1: 75393caabff3a9af980e07e1f68f613e4def0411 SHA-256: c005ac7c74d71f5ce954b97521134154a48be2a295b09fb8ead92fa4fac43090
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to external websites, many of which are hosted on disposable domains, indicating a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the heuristic indicating a link farm suggest the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://jumiwimov.ru/wix?keyword=home+decorators+collection+faux+wood+blinds+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479222/normal_5fe899266df89.pdfIn PDF document text
    • https://cdn.sqhk.co/sokodajep/3igfdjh/aditya_birla_mf_factsheet.pdfIn PDF document text
    • http://silkhfig.bid/euclidean_geometry_grade_10_worksheetszdb41.pdfIn PDF document text
    • http://wufamega.scienceontheweb.net/rerege.pdfIn PDF document text
    • http://balifruit.com/gudanixubovunaloviwx9ev3.pdfIn PDF document text
    • http://gakmancreatures.ru/how_to_use_logitech_unifying_receiver_as_bluetooth_dongle6i9cn.pdfIn PDF document text
    • http://bezprovodov.guru/sonic_drive_in_specials_after_8pmz7ctb.pdfIn PDF document text
    • https://cdn.sqhk.co/gatidixon/hhlIKPA/moviwa.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/91379736498.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495241/normal_5fdbfb86eb181.pdfIn PDF document text
    • http://lupuneruw.iblogger.org/rastreamento_cancer_de_pulmao.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425514/normal_5ff78018407f2.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafepel/agffGhb/lusubuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422658/normal_600fde606fc59.pdfIn PDF document text
    • http://1cats.space/jujixalipuwediworoxopi58ti8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446152/normal_600f180166506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405197/normal_5fd9f1d518c8b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luremanoxe.epizy.com/d_d_al_season_8_logsheet.pdfIn PDF document text
    • http://metiguwuwezaza.atwebpages.com/topology_project.pdfIn PDF document text
    • http://bolunivagoxel.epizy.com/dj_remix_song_tamil.pdfIn PDF document text
    • http://nijunopuk.rf.gd/beloxitigezefijujugiwu.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_off0000f00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00D 5488 bytes
SHA-256: b3b59f4fe573f63a83d1c9ce084c8b02407558f8f9636c5377a1487accdb9a4f
font_01_sfnt_off000102b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B1 10124 bytes
SHA-256: 8642c9365315cdb693390c3f415eb3a39dfdfe65b65f94f6c0101b0d3cdb6045

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