Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a02424fa637de24…

MALICIOUS

PDF

70.9 KB Created: 2021-03-01 03:36:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0dc18608ff90c3f21a40d29aeb691bd6 SHA-1: dc90e36a47104faf68b408f4675f913265ec2c12 SHA-256: 8a02424fa637de24b27726f5c33a01f477c7a6a58c4554f6ba305a45c626a470
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://lozipotod.ru/award?keyword=subject+verb+agreement+exercises+for+grade+1 PDF link annotation
    • https://cdn.sqhk.co/midipijikami/yOvPbhi/62304399242.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/holt_geometry_chapter_7_test_form_a_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/lgTmJhh/zevemenujodizepumedital.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450639/normal_5fdfac9a0ae7b.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/KD9XiiF/prince_of_persia_escape_levels.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/WhafheI/bridge_constructor_apk_free_download_full_version.pdfIn PDF document text
    • https://cdn.sqhk.co/bepeguvovori/getjc81/jafawogegup.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/BEjjjgQ/spaceflight_simulator_premium_apk_download.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/49363105944.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367297/normal_5feffa528e8fc.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/Sfhgtij/kivam.pdfIn PDF document text
    • https://cdn.sqhk.co/lukulobu/JihjggL/cool_fun_facts_did_you_know.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/hixjcha/gerutopapesitunixopad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369152/normal_5fd7f0cad0b26.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/mrs._dalloway_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/jgoFAgd/93298619655.pdfIn PDF document text
    • https://cdn.sqhk.co/naboxolat/guiiDal/rirurazavewirufobewe.pdfIn PDF document text
    • https://cdn.sqhk.co/xogedusov/ibvjj1j/duzawo.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/rojagizajatutilenagasuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD680 5808 bytes
SHA-256: ebc10d19fdfb9429d836b1d9db938e3a83da3a903c3ae18d2a71285d78b70e29
font_01_sfnt_off0000ea42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA42 10004 bytes
SHA-256: 24b0dc8455d6a8e8bd194967f6734a099ce8b893b2b1113cb6cb9cc32233e009