Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2c5e7a654d7b5e…

MALICIOUS

PDF

68.9 KB Created: 2021-02-15 06:33:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 985070b3e3e98a242552021970541c94 SHA-1: bd29eb72fb237d865dd5a5f72df6215d6a6d8f8b SHA-256: 3d2c5e7a654d7b5ed3910cb69a8e2fc37b284f75e93b3e8c4f0db43ce57632a8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wix?keyword=marco+polo+maps+france PDF link annotation
    • https://cdn.sqhk.co/nezafomura/gfBgcij/the_great_courses_plus_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/AiVbzhh/miwagurotiw.pdfIn PDF document text
    • https://pabidiwamudobav.weebly.com/uploads/1/3/5/2/135299897/784e5e.pdfIn PDF document text
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/6045385.pdfIn PDF document text
    • https://gariligiradafa.weebly.com/uploads/1/3/4/0/134041078/2785184.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuvedije/4jihegd/73927478216.pdfIn PDF document text
    • https://berisojelo.weebly.com/uploads/1/3/0/8/130874511/rixajuka.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/jhEhgtX/13418905844.pdfIn PDF document text
    • https://cdn.sqhk.co/sajatanugeg/ZiabUy6/rolling_sky_2_apk_data.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fejififimaketo/air_cooled_chiller_functional_performance_test.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/lojuzivori.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/3085194561.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/charminar_express_platform_number_in_vijayawada.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/tata_sky_remote_app_for_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/2019_weekly_monthly_planner_template.pdfIn PDF document text
    • http://roxunir.epizy.com/napefuwamelomowem.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/hotel_california_acoustic_guitar_sheet_music.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A0 4828 bytes
SHA-256: 2600380c13adeee3354f78b54ef7d0dd6b5ccaaee5ce21694790aa5034deaf88
font_01_sfnt_off0000d4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E3 10512 bytes
SHA-256: 0f3dd63545e6e923bc5e27b652c1ec1fa0519462e21ff46b9a08d0704bf525ce
font_02_sfnt_off0000f8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D5 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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