Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ee077c574d0ff6…

MALICIOUS

PDF

75.4 KB Created: 2021-03-19 18:40:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d5c0935dec01c29b9de717bcd9bdf327 SHA-1: d7df3ffbb0792f2f6a9dab460f2b2b73476cacb6 SHA-256: 09ee077c574d0ff67bc892fed3f407051850d73af2cab5eede5374d6ae0a4c94
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic indicating it's a lure for free downloads, redirecting to a suspicious URL. The ML classifier and ClamAV also flagged it as malicious phishing content. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into visiting a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://botokaw.ru/strik?utm_term=examples+of+using+critical+thinking+in+the+workplace PDF link annotation
    • http://webmastervlad.ru/fovobuzirepamabulobygnf.pdfIn PDF document text
    • http://fruits-summer.fun/candlesticks_strategiesl99u3.pdfIn PDF document text
    • http://fafesixokegigi.getenjoyment.net/how_to_program_universal_remote_to_hisense_roku_tv.pdfIn PDF document text
    • http://posiximuteg.sportsontheweb.net/project_budget_sample.pdfIn PDF document text
    • http://feedbacrnz.space/kobomusurevepabofixc9m4r.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/1e4a92b8-03f9-4b41-b110-d5425d09eda6/39065529113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d913a55-d72c-4a0a-8b95-62424b2d0a69/89701585072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef23a757-b983-4cb7-881d-d75cd1bcaf11/dedawebugim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffbd3fa6-aad4-451a-99d7-e2e038e9c1e2/the_new_psycho_cybernetics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/febc5aba-eaff-4e07-a947-2eb5a6a504f1/harry_potter_and_the_half-blood_prince_film_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c6ab7a8-841e-40f6-ad90-ff20c505a5db/hp_z420_drivers_pci_serial_port.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15e3a90d-ee8e-4121-92b5-64b702b484c6/livurukawiluvuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/801e124d-bcdb-4617-8054-402f231ca207/jawaxozukadewejirivapesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca239f2e-0aee-49d9-8b71-a283f7fcb752/53860379607.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/the_fall_of_five_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f2676de-cb74-4e2d-a521-ca48d9517b76/dyson_dc25_filters_where_to_buy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49c8c3d3-9ec2-48ca-acfb-88e09e04b8bb/85731511102.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/vehicle_check_report_kerala.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_off0000e995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE995 5608 bytes
SHA-256: 2959603f55c87e4fbc5bc899e74252505d96990b49d292a8f62512db6bc9500c
font_01_sfnt_off0000fc9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9D 10208 bytes
SHA-256: dab9652583ce553094a9e09f0df54a5ff2e9e5d91ba429ac1ab502e63731453c

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