Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6a2cadbb08c4b37…

MALICIOUS

PDF

67.6 KB Created: 2021-02-18 02:43:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 377c40eca1c3eb70b5810c44c9302aed SHA-1: 2b8e5ddca67a4c2e57643b2017c2ecd290cc08ab SHA-256: f6a2cadbb08c4b373ebb733654872a452e6605dd05798751726c170f9d081c7e
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://maypoin.ru/wb?keyword=how%20to%20update%20my%20kindle%203rd%20generation PDF link annotation
    • http://toselarasomax.iblogger.org/25928745195.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379387/normal_5ff77fb34aece.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/IjiWChd/jonifonosijetomubobam.pdfIn PDF document text
    • http://tikenifoziv.22web.org/2016_buick_verano_service_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/sotixesikux/kicjj6Y/chikungunya_and_dengue_a_case_of_mistaken_identity.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/dozore/18338122571.pdfIn PDF document text
    • http://zilajib.epizy.com/98419760347.pdfIn PDF document text
    • http://duxuramubot.epizy.com/25736522843.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/38728973430.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/blackberry_passport_android_phone.pdfIn PDF document text
    • http://duxupupin.epizy.com/free_weight_watchers_food_points_guide.pdfIn PDF document text
    • http://jusisow.rf.gd/mastering_astronomy_assignment_2_answers.pdfIn PDF document text
    • http://xupasafagimi.rf.gd/accident_report_form_16_esic.pdfIn PDF document text
    • http://lefumus.rf.gd/junckers_sylva_cleaner_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/citation_machine_apa_format_website.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_off0000ca39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA39 5484 bytes
SHA-256: f7824661bc234e627fce1a97e0890eebaa6aa49cdb73a52a8791bb91a254ce14
font_01_sfnt_off0000dceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEB 10768 bytes
SHA-256: 332e2fe493505abeea1572982a8759e17e13ca276a0816d3942d268db214fa19