Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2bd6ee6622942c8…

MALICIOUS

PDF

70.4 KB Created: 2021-02-18 12:20:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6dd31457fd456b311b73b9089596cde0 SHA-1: 301d1a29a5426df6e2a71900f699622b5bb4f34c SHA-256: c2bd6ee6622942c8a77c031965d073f4c5eed399aa9374dd852573142a775982
254 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
  • 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.
  • 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.
  • 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://yafferge.ru/infin?keyword=shark+navigator+light+vacuum+nv105+review In PDF document text
    • https://vedewoxid.weebly.com/uploads/1/3/0/7/130738666/teziwidoliwaf.pdfIn PDF document text
    • https://kotazadan.weebly.com/uploads/1/3/4/3/134349323/xekoxeli.pdfIn PDF document text
    • https://dakufosaxem.weebly.com/uploads/1/3/4/7/134771611/wukedowarakesirika.pdfIn PDF document text
    • https://cdn.sqhk.co/rikopekela/fz4iagf/wolf_game_booster_pro_apk_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/iz70Pwp/3d_origami_animals.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447270/normal_5fd67f4ce98f3.pdfIn PDF document text
    • https://cdn.sqhk.co/wibezudak/iSsgfnO/83060331061.pdfIn PDF document text
    • https://cdn.sqhk.co/somisafeg/Jjagcgh/birthday_cake_designs_for_girlfriend.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/jdjejah/candy_crush_friends_saga_level_158.pdfIn PDF document text
    • https://raxagipob.weebly.com/uploads/1/3/4/8/134883443/9d709f.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/zerepuzuze/cadgwith_anthem_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/login_template_html_php.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/huntsville_state_park_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/finataxetiko.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/inflorescencia_botanica.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/34339290082.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/que_es_enfoque_psicosocial.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/86628483263.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_off0000d6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E6 5672 bytes
SHA-256: 318b9d5d33c426ec44750499c897697677e6d53fe12d8bbf625c8ec850192f37
font_01_sfnt_off0000ea24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA24 10032 bytes
SHA-256: d36eb40ce5a98aa8130d35d9e95529d30cb2f696e9fcb5500117e4b9308e2d64

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