Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da6c0869e233c7f…

MALICIOUS

PDF

70.6 KB Created: 2021-02-24 23:02:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0c9cc82d00cfb160104deddfe5df4693 SHA-1: 511c21fa72f8e6cd2daeb0c0bad48e97cadcf3ce SHA-256: 7da6c0869e233c7fd85ad2b38c54a2118e736db5f225da99bfe1b23da511c20f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=str+dn1050+update PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474205/normal_601fa1f282fdf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471683/normal_5ffaa51b18d24.pdfIn PDF document text
    • https://cdn.sqhk.co/doxufojixene/6LQ8gcA/major_mayhem_2_cheat_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/PidGDja/redream_emulator_download_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501356/normal_5ff428339515e.pdfIn PDF document text
    • http://tublitalia.fun/kifomukigefatin0ntm.pdfIn PDF document text
    • http://superheatbelt.xyz/56695683328yq8h8.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/b7mgcTd/bird_racing_simulator_eagle_race_game.pdfIn PDF document text
    • https://cdn.sqhk.co/sufokorume/XRpjahb/.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378153/normal_602115e6e6556.pdfIn PDF document text
    • https://cdn.sqhk.co/rajosibakulu/bvge6gp/oxygen_sensor_socket_napa.pdfIn PDF document text
    • http://podarokinsta24.online/fenixowolirbipwg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370764/normal_6035250ebb104.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/vatakefojunib/bereket_emeklilik_bes_ayrlma_talep_formu.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_off0000d19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19C 5164 bytes
SHA-256: 68d66b634b83f40d43d6470ea8930a99ab1e996c8a8a941bd6125434ba5f381b
font_01_sfnt_off0000e33d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE33D 13464 bytes
SHA-256: 7b23e99ab519d4d0a746071224140a70b802c6f1c82165d0e712cb93ba744e0e