Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f95dd8aff09cf5e…

MALICIOUS

PDF

73.1 KB Created: 2021-02-24 20:49:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f42d31f114a89c567d6745168c5a83ee SHA-1: f33936f7202f10998845157b88f0c3744d165268 SHA-256: 4f95dd8aff09cf5e6d1a1a6605b992c9eb4e08d3ccc9c3314775e502e772d0a8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=best+skullmasher+borderlands+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446923/normal_5fca906b351d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379726/normal_60144c00e0e2e.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/hp4Vjbx/19504465297.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/gjFo0gh/49923148652.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416661/normal_5ffc343da5271.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/should_i_use_a_salicylic_acid_cleanser_everyday.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/rhyming_dictionary_for_kids.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/hhehjdv/parenting_choices_quotes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_60276f968ebad.pdfIn PDF document text
    • https://cdn.sqhk.co/jejefudebuxi/nvbXhjr/key_west_shipwreck_museum_webcam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475729/normal_5fcd35dcf0491.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/sowirutelevolur/score_hero_hack_apk_2019_descargar.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/bushmaster_xm15-_e2s_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/jesumug.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/acids_and_bases_worksheet_ks3.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/64727914285.pdfIn PDF document text
    • https://s3.amazonaws.com/gusule/aadhaar_card_pin.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/asphalt_7_android_game.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/jedosin.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_off0000e134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 5452 bytes
SHA-256: 15ccab8e712c4e44c77a73ed6ed2d1a9b8e43861a7003bb8ca06b1e60399d3e2
font_01_sfnt_off0000f38d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38D 10472 bytes
SHA-256: 0b7abf55b51eca6c09bb32aa94d761c99507067e7848927c979634f9f932f3af