Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a55c5a44530cff1…

MALICIOUS

PDF

78.3 KB Created: 2021-03-01 10:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4f66114ff8596c5a491ef46c2d4d1988 SHA-1: 9adb927f28d2da70593372adfde6a9d0a7ba5d42 SHA-256: 8a55c5a44530cff16185d0875d1a3a81bebc62d4c7d8291222f60d16f5df0e2e
136 Risk Score

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://lozipotod.ru/award?keyword=the+scarlet+pimpernel+musical+bootleg PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375339/normal_60112f1c31eb2.pdfIn PDF document text
    • https://cdn.sqhk.co/guxuboru/ORihjKB/pokemon_go_community_day_september_2019_time.pdfIn PDF document text
    • https://cdn.sqhk.co/rapedipular/fjajbhb/movie_date_night_at_home_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/gfihfgd/rujodakekolatodubobovo.pdfIn PDF document text
    • http://inmyshtangen.xyz/dai_best_staff_schematicerz06.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/Bggjghh/blockstarplanet_mod_apk_unlimited_money.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378390/normal_5ffbfd553a53f.pdfIn PDF document text
    • https://cdn.sqhk.co/zebapomiz/hgdKWa6/anime_gacha_simulator_rpg_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385614/normal_6009330fdaf82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_60388f264d243.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446930/normal_5ff2ff88d0b6a.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/JjhhcBi/wilderness_survival_reality_shows.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/dYidmii/4522901267.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/gegiidy/tiktok_likes_and_followers_hack_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390638/normal_5ff47d7982283.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465263/normal_5ff890e87a44d.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/suxuzubojut/teporikitigotu.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/number_location_tracker_app.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_off0000f45b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45B 5436 bytes
SHA-256: b60021e71e9182c5f37d4299318f5a9a29b296a40d681e6b1232ca8d0e13286b
font_01_sfnt_off000106b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B1 11084 bytes
SHA-256: c4ebf88f7f12f8c7850386f0b844860b1eb09c9a73372e6c899ddea65c142b8d

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