Malicious PDF — malware analysis report

Static analysis result for SHA-256 116a6ad9750b9c57…

MALICIOUS

PDF

67.3 KB Created: 2021-02-26 05:37:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bccc518c8af82e614d0378d5f7c5bdf2 SHA-1: e06d44640677abb6bca15f06d70bbac8ea066118 SHA-256: 116a6ad9750b9c573e1aff66b59d76f11ecbcb72973f1e4d7b535b09b053ce56
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://druttle.ru/wix?keyword=bose+cinemate+remote+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386591/normal_5fd799386dbe9.pdfIn PDF document text
    • http://com-signto2.xyz/meluxikt1l1.pdfIn PDF document text
    • https://cdn.sqhk.co/liregagibago/5nicsji/73100988604.pdfIn PDF document text
    • https://pinafizupefed.weebly.com/uploads/1/3/1/3/131380591/vegukewokili_nabejulekular.pdfIn PDF document text
    • https://movimuwetimegi.weebly.com/uploads/1/3/4/3/134342740/wikipijojix_pizudis_fabesaxusos_muwumuk.pdfIn PDF document text
    • http://velesvoyage.ru/media_player_classic_32_bit_xpjd443.pdfIn PDF document text
    • https://mizemajawoxulu.weebly.com/uploads/1/3/1/4/131437858/5104886.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/jinotugiwomo/14201956617.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/always_on_display_pro_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/salojawamasufovoxatufubus.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/olive_garden_chicken_alfredo_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/sliding_door_bottom_roller_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/beyblade_burst_turbo_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/physiology_of_autonomic_nervous_system.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/balefege.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/63243726553.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_off0000cc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC81 4996 bytes
SHA-256: 488327666eafe6572abe7e447fc15969725c3c23447a3aa12f1c34b091b796dc
font_01_sfnt_off0000dd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD62 10160 bytes
SHA-256: e811d75b2e361ad11573c95b027d0673069aa015974adeba2946a41b4265e8e6

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