Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab3d86edbb73042f…

MALICIOUS

PDF

67.0 KB Created: 2021-01-26 11:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 49a93050576f21f3f9fd0bbaedf932dc SHA-1: f397fbe28abf0eb3cca0a22110edd7e1f8aefb37 SHA-256: ab3d86edbb73042f8bb4f710a5ce2314ea91bc2b3f75b3793bc876547c9a1c0c
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/wb?keyword=family%20fortunes%20correct%20answer%20sound%20effect PDF link annotation
    • http://natlab.ru/funny_instagram_captions_for_baddies5z35z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486987/normal_6002967c0e54b.pdfIn PDF document text
    • https://cdn.sqhk.co/tinupolureg/gcijijc/best_shot_3d_edm_music_game.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/ghghbe6/glider_flight_simulator.pdfIn PDF document text
    • http://air-calm2.club/fujotujusuloturovkbt6n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499341/normal_5fc80469f2514.pdfIn PDF document text
    • http://idealicaitalia-official.site/is_simply_piano_by_joytunes_a_free_appxzpgz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391621/normal_600a246aa4304.pdfIn PDF document text
    • http://fartook.online/54339237338g4rwr.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/gafedupeba/musofisapuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/transition_to_land_habitat_of_archegoniates.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/octonauts_humuhumunukunukuapua_a_creature_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/abhimaan_movie_song_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/54591046528.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/33695355632.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/bolero_guitar_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/26990682553.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/95235665722.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_off0000c953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC953 5316 bytes
SHA-256: 26a31974a3de14027ba6fbc5bba791bee38a0ccf22da634c0a0b2d4798a6fa24
font_01_sfnt_off0000db71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB71 10440 bytes
SHA-256: d86faa06c4efa18e824c959d5ba95813e954f32710ef1ecf19197d1638aa1e64