Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ffae6d67ef82bf…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 11:26:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cdb434dc9ecf6444382d11836a73479c SHA-1: 96681ebffda49712effb7cdee9eaf7180b714b8b SHA-256: 14ffae6d67ef82bf16253c3f62e8e4aea45557c11bd40384c7a81d740b8e1cdb
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=unblocked+games+shooting+alien+attack+team In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368494/normal_6028862967307.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452587/normal_5fcbaf407fc4e.pdfIn PDF document text
    • http://ropufogesuzazeg.iblogger.org/beyblade_game_for_pc_highly_compressed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454808/normal_5fd9331c16b1a.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/90253578855g03ns.pdfIn PDF document text
    • http://freud.icu/survey_results_report_example_ppttvo7g.pdfIn PDF document text
    • http://zoompol.xyz/wakuxonijamoxavatiwosexak78vd9.pdfIn PDF document text
    • http://shtancircul.site/99323121655ykwoe.pdfIn PDF document text
    • http://shopbest.online/bizufuxenutudimefadwf4ju.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
    • http://fudixuxutinizow.rf.gd/59970580078.pdfIn PDF document text
    • http://fepirag.epizy.com/bakibur.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/abordagens_humanistas_em_psicologia.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/everyday_buddy_holly_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/android_studio_avd_alternative.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/dentinogenesis_imperfecta_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/counter_strike_game_for_computer.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_off0000d4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CF 5240 bytes
SHA-256: 908768fead446ff0567ff5aa4be3707dd3efd03201c85e78a804c309bac1f35f
font_01_sfnt_off0000e670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE670 10176 bytes
SHA-256: 128c842f10d0285d0d06800f10bab98a1f9cc5360c0d16596d7cae0c8b29b41d
font_02_sfnt_off000108f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3