Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f1b6bb4325d0cec…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 02:20:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e3237304c4794328748a2b12878fbca3 SHA-1: cdfa14ec0f7d3539b346aed3ffbf4d377653f0ea SHA-256: 7f1b6bb4325d0cec05ae9e3601d0110d84f98d57e4aa3b99b142365eb1694bde
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/award?keyword=fifty+shades+freed+ending+with+baby PDF link annotation
    • http://gagivukamuw.getenjoyment.net/19594688575.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/gdggE0R/infinite_painter_win_10.pdfIn PDF document text
    • http://duzusedolatepe.mypressonline.com/sojuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5fd2f68295829.pdfIn PDF document text
    • http://blankid.ru/navy_maneuvering_board_manual49bre.pdfIn PDF document text
    • http://puzexijabin.mypressonline.com/how_to_read_apple_book_reviews.pdfIn PDF document text
    • http://italy-small.space/13057749221o50hs.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/yUibYAY/pc_creator_pc_building_simulator_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/gufuluzibos/jfdCehc/name_all_destiny_s_child_members.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391340/normal_5fec1492294d9.pdfIn PDF document text
    • http://instapriz.website/situnupeleramiviluwesapuz6lejj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375076/normal_6006747a303ed.pdfIn PDF document text
    • http://manybigs.space/62257241728ucrd2.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/xakusineba/lomikadazokuxemaxogabu.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/dumbbell_lateral_raises_proper_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/pen_drive_protetta_da_scrittura_formattare.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/piguwujam.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/acr_guidelines_for_renal_ultrasound.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/29487792824.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/pokemon_red_gameshark_codes_exp_multiplier.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_off0000e09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09D 5428 bytes
SHA-256: 6645f15a224cf6c00336ebf5158899dba049e5643307c58890b5845fafa3036f
font_01_sfnt_off0000f32d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32D 10512 bytes
SHA-256: 9569f532f702e0cbcf9138a3965d456aecc0c33c827d2902f3a661aca7b02089

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