Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0281c20899db45e…

MALICIOUS

PDF

75.8 KB Created: 2021-02-09 04:51:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5ba2aca3163acc75b53d5e00c1e8513c SHA-1: b161954299ac70968b2ab8b1b9efcfd1eefc3489 SHA-256: c0281c20899db45edd0098171f2820083b1f1d7b0e481bf6cf31627d53ac29d6
196 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 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.
  • 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://jottigo.ru/123?utm_term=league+of+legends+hyper+carry+champions+2020 PDF link annotation
    • http://my-favshoph.online/object_pronouns_worksheetevs32.pdfIn PDF document text
    • https://cdn.sqhk.co/dodiniwotud/gelMib9/skins_cast_uk.pdfIn PDF document text
    • https://bugotenopiziwa.weebly.com/uploads/1/3/0/9/130969298/97a8d7db3a8da4.pdfIn PDF document text
    • https://baginemesurewis.weebly.com/uploads/1/3/1/3/131380932/nitupuwaxesoragaki.pdfIn PDF document text
    • http://djami.ru/gazujaxarury8jvq.pdfIn PDF document text
    • http://hotloveme.online/depression_testtabzf.pdfIn PDF document text
    • https://kuzogirig.weebly.com/uploads/1/3/4/7/134748708/sobojijulugevaju.pdfIn PDF document text
    • https://cdn.sqhk.co/zifuvifiweva/ih65djd/87923307854.pdfIn PDF document text
    • https://cdn.sqhk.co/tosijoxopum/gdCbThb/best_world_war_1_flight_simulator.pdfIn PDF document text
    • https://sawisede.weebly.com/uploads/1/3/2/6/132681865/3625896.pdfIn PDF document text
    • https://cdn.sqhk.co/rabuzopat/eehbpYz/89895174600.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377679/normal_5fd27d2d9781e.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/gofiguj/related_party_transactions_disclosure_in_directors_report.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/xediruzovexozawibirubuxax.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/baal_veer_episode_1112_hd_video.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/java_1._6_api_documentation_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/boss_tu-_3_chromatic_tuner_pedal_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/amman_bakthi_padalgal_masstamilan.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_off0000eb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0A 5888 bytes
SHA-256: 54d6391886e7f86eefe6cf0d6154c258bfdb6c5e6857676a90c2e969f1e72644
font_01_sfnt_off0000ff01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF01 10300 bytes
SHA-256: 199f9cacbd19f52b585558ef9c8679f6ca292fd7f401eb776b65f8cfa13d8527

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