Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b2c746442a0798…

MALICIOUS

PDF

65.6 KB Created: 2021-03-02 14:00:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 027adda3a3e61362849ecd6cd0e07d10 SHA-1: a83746fa5f5ecfc7534c9109b54dfcc88b1b7a4f SHA-256: 36b2c746442a07980e07a13ee7fe8d2d8ef329d099f1483a47fa0cd4b3a46de5
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://mezovuduw.ru/wb?keyword=d-link%20dsl-2730u%20user%20manual%20en%20francais PDF link annotation
    • http://erogan24.website/vizorululudarinogapl9r7k.pdfIn PDF document text
    • http://lovemecompletely.com/kiledhp3vu.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/noxesazasurugovuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467004/normal_5fc7cb2fba6eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426954/normal_5fdd11856616a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379982/normal_5fdc2e3343a63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384037/normal_6011137dbe53c.pdfIn PDF document text
    • https://finaxapiw.weebly.com/uploads/1/3/5/3/135301963/0a0ffd9c8d089.pdfIn PDF document text
    • https://rugabefek.weebly.com/uploads/1/3/0/7/130775918/263857.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465128/normal_5fe5d84585ccf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456114/normal_60206cc274b99.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/lomuper/insert_rows_in_protected_worksheet_excel_vba.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/how_to_connect_universal_remote_to_tcl_roku_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/beneficiary_deed_missouri_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/9948835066.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_off0000c4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E7 5780 bytes
SHA-256: 010f3e454b45f0d3f1c7e225a3bd3728852965d12aa759d4efd41cab4549eac8
font_01_sfnt_off0000d892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD892 9612 bytes
SHA-256: 0f8ff497dbe990587487008fbd2b192a8aa82e4f87a2e515500acf54e55d5781