Malicious PDF — malware analysis report

Static analysis result for SHA-256 92241e70ae50d993…

MALICIOUS

PDF

66.3 KB Created: 2021-02-25 16:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: de71425b4d82d5b0349d747f726efe20 SHA-1: d81964b4ef8c2dda3dd4f5633b81f5d0aea79dfe SHA-256: 92241e70ae50d9934fcbf055c5b5393f624de58d17119c64f51bf0667164d7ab
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/award?keyword=jesus+be+the+center+chords+bethel PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427282/normal_600fa4ae13fa0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476002/normal_5ff71b88f05c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454162/normal_5fced1a1ca962.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460057/normal_5ffb2979c54ea.pdfIn PDF document text
    • https://cdn.sqhk.co/gujamozulas/ScP7Xig/poworedujujolomobajaguv.pdfIn PDF document text
    • http://yourbigdick.space/nj_transit_fares_for_studentsfoxfm.pdfIn PDF document text
    • http://subonus.ru/video_editor_app_play_store5suw4.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/l0ibhiq/open_houses_near_me_friday.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443372/normal_5ff1835a72f31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420761/normal_602ff261b8cd1.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/nhgeggf/shipping_manager_jobs_in_canada.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/vavebufevodutob/right_answer_sound_effect.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/excel_vba_sheet_name_contains_string.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/axiomas_matemticos.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/26811732794.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/manual_capsule_filling_machine_procedure.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_off0000c952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC952 4944 bytes
SHA-256: a5c9948872cc115ddf570601369370d48b1cb18dca7947e919c32e1d6d67b5b6
font_01_sfnt_off0000da13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA13 10004 bytes
SHA-256: 130f3bf2a3602c9a15119e79d64aba24dedba99d258a23e21523b8cba14395b7