Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe09719c452dc85c…

MALICIOUS

PDF

76.7 KB Created: 2021-04-02 21:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 503fec74ae9ff50e932a64e99c3dc7d3 SHA-1: b206a1b6b2e9d022f89a01974901be9d92311e9e SHA-256: fe09719c452dc85cf9909800d147c1b43a498588e57382598465f2c9f62adf16
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary suspicious URL identified as https://midufefew.ru/award. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'chart pdf' and 'wkhtmltopdf', suggesting a lure document designed to redirect users to malicious content.

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://midufefew.ru/award?keyword=awg+to+mm2+chart+pdf PDF link annotation
    • http://bojukekaj.66ghz.com/werimelamatijupefaz.pdfIn PDF document text
    • http://nidewopovuwubo.mypressonline.com/fowofexikukulilate.pdfIn PDF document text
    • http://fapisobol.iblogger.org/74898290995.pdfIn PDF document text
    • http://zesenadozefut.sportsontheweb.net/fegepunuxisujaf.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/the_talented_tenth_web_dubois.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/hdPgjkJ/53421850355.pdfIn PDF document text
    • http://jopagozopive.medianewsonline.com/is_.net_core_easy_to_learn.pdfIn PDF document text
    • http://poludafe.iblogger.org/infosys_annual_report_2020.pdfIn PDF document text
    • http://ziwewixowele.sportsontheweb.net/west_africa_history.pdfIn PDF document text
    • https://cdn.sqhk.co/dapumexader/OjfmDif/advantages_of_technology_in_entrepreneurship.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe5429a3-66e9-4888-b878-124a5dcbd928/19848085795.pdfIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/36245168236.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/design_document_for_library_management_system.pdfIn PDF document text
    • http://pedirite.onlinewebshop.net/saifurs_analogy_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/counter_strike_1._6_warzone_windows_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f566f47b-9479-4af3-913c-4cc30f6c4cba/59859309022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/862d63aa-2b83-4f3c-98ca-315a811d451b/panthertown_valley_map.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/foxtel_movies_channel_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05c84c97-a1ae-4be2-a33d-88942beeba72/edtpa_examples_task_3.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/introduction_to_management_accounting_16th_edition_solutions_chapter_3.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

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_off0000ed04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED04 5572 bytes
SHA-256: c48a3eec78b52606b19b40ce1821d4728c959298600a585107a8815230accb8b
font_01_sfnt_off0000ffe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE9 11520 bytes
SHA-256: 417d4296687bf06bde296049ca3fc173d4ffda08126a4f2042153cbf0d759cf3

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