Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68f47fdb4927466…

MALICIOUS

PDF

84.0 KB Created: 2021-04-25 15:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 4cc8a939b997e9cc04045698ae4c2315 SHA-1: e6ff3e75bdc11711505b719619a293e8fe3c62bc SHA-256: d68f47fdb49274668c96a16cd92aa5c02735f3bc3afdb0fb67bf78d1e06cffef
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to a furnace manual, suggesting a phishing or malware distribution attempt. The presence of external URIs and link farm characteristics indicates an effort to redirect users to potentially harmful sites.

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://jumiwimov.ru/strik?utm_term=ruud+deluxe+80+plus+furnace+manual PDF link annotation
    • http://tenegijo.iblogger.org/avatharam_telugu_full_movie_free.pdfIn PDF document text
    • http://talekibof.22web.org/ets_toefl.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403541/normal_6025503e790be.pdfIn PDF document text
    • http://creditactive.info/zemiwox0g258.pdfIn PDF document text
    • http://www-sfr-fr-monespace.com/12_lead_ecg_interpretation_cheat_sheetwlfn3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_60482377548cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496592/normal_5ffe55cc8c56d.pdfIn PDF document text
    • http://wonder-ita.fun/how_to_increase_pressure_on_a_resmed_cpap_machinel5rur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476445/normal_603d285123712.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://litopojijerel.epizy.com/nacte_guide_book_2018.pdfIn PDF document text
    • https://0926596c-b1e6-4473-87d6-fed2e709bfeb.filesusr.com/ugd/e2a635_c840d0c3584343f1965659b20578dde6.pdf?index=trueIn PDF document text
    • https://781b76d0-895c-4d4e-90f3-491762fad171.filesusr.com/ugd/894952_c3591aac2ddf420a81c9e47742fd64ed.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf140543-5989-4bce-82de-48fc6cfa29f4/why_is_my_fitbit_versa_lite_not_showing_text_messages.pdfIn PDF document text
    • https://144ece88-722e-4d59-a9d1-ae16887514c2.filesusr.com/ugd/48b17f_692827b432a6460f99eea747f80f6d5e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2259dbb2-1822-482c-b35c-67f6831dc2d3/gegadupuwiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e60ba602-32ba-4802-b040-03964fd61081/28805465261.pdfIn PDF document text
    • http://lorenivi.rf.gd/toyota_auris_hybrid_2020_user_manual.pdfIn PDF document text
    • https://05491ccc-77c7-428b-9c25-74f2c6c50d4a.filesusr.com/ugd/d51d36_415479a600654e7c9ca2320800b713b1.pdf?index=trueIn PDF document text
    • http://fenizedotukodi.epizy.com/excell_pressure_washer_pump_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbe353aa-03a2-4bdc-ba28-5549714e974f/sentry_safe_combination_codes.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_off0001046e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046E 5712 bytes
SHA-256: e4bb1fc7a2639465ea07fa7310ed716dc827a84d553e047633e2b8e173ccb556
font_01_sfnt_off000117d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D5 12808 bytes
SHA-256: 3285b9382836603524fa471ed998a0a11599cf8851ec78087fcfd93b283e8704

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