Malicious PDF — malware analysis report

Static analysis result for SHA-256 d956ce62f716f153…

MALICIOUS

PDF

64.9 KB Created: 2021-03-06 14:46:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9524e13c834525556bb9059910ac1579 SHA-1: 1d5df6288c2e88437e868649a162b8b8b96b0384 SHA-256: d956ce62f716f1538763065a6979c706e39ec8e7a12c8b37150dc342ae27373f
134 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/award?keyword=winchester+gun+safe+lock+instructions PDF link annotation
    • https://cdn.sqhk.co/xugumewaz/hPrr73s/star_wars_x_wing_2._0_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445550/normal_5fdbd935eddc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376379/normal_5ff29e068a331.pdfIn PDF document text
    • http://topcreditcheck.info/brandy_bottle_label_template_freez4gcd.pdfIn PDF document text
    • http://theandyhong.com/excited_electrons_lab_answershhgl7.pdfIn PDF document text
    • https://cdn.sqhk.co/rapigufagi/Hmgcji7/she_fell_under_my_spell_song.pdfIn PDF document text
    • http://fionainthefield.org/bemikonapaviduwuvecg156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369912/normal_602d3ebb89f97.pdfIn PDF document text
    • http://tersq.space/decision_tree_maker_google5pu0g.pdfIn PDF document text
    • http://boost-store.net/dadodaxuxpm36p.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/zakunafu/craftsman_88173_snow_blower_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed028806-3517-45f6-9733-b984b45ebbed/valibirenow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d40d0de-f06a-4754-9d3c-ce0cb701791b/vuxexiteso.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/fishing_planet_germany_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7650a7e-492e-49c8-853f-87f8833ac266/sitaginumoferinotupeze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b985bae-08a9-4a3c-ad9d-a2da60eeb6b0/how_to_set_up_voicemail_on_samsung_galaxy_s10.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/xuramut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad3879b1-6f3f-4ec5-ab90-536cdeadc62f/rules_for_adding_and_subtracting_positive_and_negative_numbers_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/75840832803.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_off0000c3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3CF 5220 bytes
SHA-256: 0b5b81fe9c85e5f71b35c0caf6ad472f6510748b5718a9d88fcf66408af5bc02
font_01_sfnt_off0000d59e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD59E 9568 bytes
SHA-256: 2a19c256d3c303894748cb15568bb1c62337c84c4f213ab2b7320079e628fe14

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