Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2c353cce7e547f…

MALICIOUS

PDF

69.6 KB Created: 2021-03-01 09:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bc9bbfa567a4d1b6be1e5b3d7f8d21cd SHA-1: bbc8eb645814a0418bf8602feb95fc7c1847538d SHA-256: de2c353cce7e547f383c198aa0365b24ceae28518986e494505af5b60f01b0ee
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://baarspo.ru/wix?keyword=proofreading+and+editing+precision+6th+edition+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404959/normal_6009c0dd894b8.pdfIn PDF document text
    • https://cdn.sqhk.co/bozutebux/fjaigic/general_hospital_recaps_soapcentral.pdfIn PDF document text
    • https://cdn.sqhk.co/vatukaso/iagjjiH/pogadajifiwowi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488116/normal_60157a5f48091.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490001/normal_5fe3ff7e52a9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373776/normal_5feb799f94dd4.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/eKhaOjf/no_crop_video_editor_instagram_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426701/normal_601e035c43492.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/Ighjbie/pop_music_definition_history.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/0jckOWS/xurimev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478932/normal_60114571df829.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457011/normal_5fcca05278e16.pdfIn PDF document text
    • https://cdn.sqhk.co/zadorari/jd1bfie/highway_maintenance_driver_jobs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fufapawaxuta.rf.gd/raina_telgemeier_smile_age.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/84286481729.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/words_that_rhyme_with_moonrock.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/gupazikokosimunivo.pdfIn PDF document text
    • http://vapedefomagejev.epizy.com/collision_reporting_center_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/62992161087.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC355 5584 bytes
SHA-256: be50cccf8a779a2de5acb48a9894bf3885b8ae132fb00fdd42bead143fa826c7
font_01_sfnt_off0000d65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65E 10600 bytes
SHA-256: cec66f68ac53b8bd33512d5e8cefae270b4f87e5953fd6f491c66fb4b1e6c6ba
font_02_sfnt_off0000fa60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA60 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3