Malicious PDF — malware analysis report

Static analysis result for SHA-256 f959b10fb8ca473e…

MALICIOUS

PDF

76.8 KB Created: 2021-02-17 17:02:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 33ddd9668354f8b3435bf086cc40b45c SHA-1: c74ce66844d922bbba236e7ea139beab11524d51 SHA-256: f959b10fb8ca473e1e1e0fd60723b808138a27eaf66ecee559f2c8f096b48b16
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=fallout+1+low+intelligence+guide PDF link annotation
    • https://sitavekoked.weebly.com/uploads/1/3/5/9/135974486/3279106.pdfIn PDF document text
    • http://pitushok.space/xevilukenijijozajosixexetwhc9.pdfIn PDF document text
    • https://pusenosate.weebly.com/uploads/1/3/5/3/135347115/ba30528c7a.pdfIn PDF document text
    • https://zirakamu.weebly.com/uploads/1/3/1/3/131398357/wasivujekokekozel.pdfIn PDF document text
    • http://front-glass.website/786625492249g0q2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407062/normal_6006514c20c69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457876/normal_5feaee263e9d2.pdfIn PDF document text
    • http://wordwild-store.com/vuvima7uoo.pdfIn PDF document text
    • http://axecheat8.xyz/5223478656lxlhk.pdfIn PDF document text
    • https://sunakolezapomuj.weebly.com/uploads/1/3/4/6/134698053/vimepazasuwuf.pdfIn PDF document text
    • https://cdn.sqhk.co/kapimetavis/iejcaP5/wodowo.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/bawalidamovidud/leavetaking_ni_no_kuni_2_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/was_the_grand_inquisitor_a_jedi.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/sakhi_telugu_movie_songs_free_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/vagojedu.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/personal_cash_flow_statement_template_xls.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/64323991763.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/passive_voice_mixed_tenses_exercises_with_answers.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_off0000f1ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EF 4932 bytes
SHA-256: ecefd126de3effe3cd76fbabbc64ed7b21ac28d633290ad39df56030efc9c8d1
font_01_sfnt_off000102e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E6 10416 bytes
SHA-256: 5538d99fc2f203e44492f61e312ccb6628e7555bd6fb685f988f3ee113517575