Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17bfb3133903575…

MALICIOUS

PDF

78.7 KB Created: 2021-04-01 18:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 748c9ec6d59c954527d56f83bf51a58b SHA-1: 39b741567d2c05177b9f2b624ac07954500f3035 SHA-256: c17bfb3133903575d00bdcd2511fbecdc7e5c384a56019e4eca7c19e343fc8b2
66 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, indicating a malicious intent to redirect users to potentially harmful content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to download further payloads or phish for information. No scripts were extracted, but the overall structure and URL distribution are highly suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/strik?utm_term=human+anatomy+%2526+physiology+laboratory+manual+13th+edition+pdf PDF link annotation
    • http://vostokzapad.su/zasixubatapigulifq5t1j.pdfIn PDF document text
    • https://dozevexenunapaf.weebly.com/uploads/1/3/4/0/134017655/xilawo.pdfIn PDF document text
    • https://lovaxases.weebly.com/uploads/1/3/4/6/134685664/wawevusipovukinona.pdfIn PDF document text
    • https://xizejaselaz.weebly.com/uploads/1/3/4/3/134357450/puribe.pdfIn PDF document text
    • https://xuxedujuwa.weebly.com/uploads/1/3/5/3/135345360/2092182.pdfIn PDF document text
    • https://retizobokeli.weebly.com/uploads/1/3/1/0/131070240/7680433.pdfIn PDF document text
    • http://getcreditreport.info/sample_interview_questions_and_answers_for_medical_assistantvyc3h.pdfIn PDF document text
    • http://geosen.net/zogivugufitofokipusivedeket76.pdfIn PDF document text
    • http://prizinsta.site/employee_training_plan_template_in_excelaqhrt.pdfIn PDF document text
    • https://mirajaxudedina.weebly.com/uploads/1/3/0/7/130775596/67060720d4.pdfIn PDF document text
    • https://mupoveno.weebly.com/uploads/1/3/4/3/134371030/9007477.pdfIn PDF document text
    • https://gimuloge.weebly.com/uploads/1/3/0/7/130775506/9409294.pdfIn PDF document text
    • http://ejqy.com/hummingbird_depth_finder_manual6v3j1.pdfIn PDF document text
    • https://nozigofomin.weebly.com/uploads/1/3/4/4/134481739/nitozowopa.pdfIn PDF document text
    • http://natikolom.site/88640873931gxr40.pdfIn PDF document text
    • http://cashfree.store/modals_for_permission_obligation_and_prohibition_pptn9pzy.pdfIn PDF document text
    • http://vpntop.info/bodutefakajurikutorovebuzrwogh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/ravipejanuwaw.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/h4n_pro_black_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/descargar_commandos_behind_enemy_lines_para_android.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_off0000f9e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E8 4588 bytes
SHA-256: af0d04ba969d4b559d3569c9d160b421414e428fc87f14d66bf3327d008b5ee5
font_01_sfnt_off00010976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10976 10592 bytes
SHA-256: 2180a650a620da869e744e17ee0c34a8c6893df53f72687679330025e3a88ecc

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