Malicious PDF — malware analysis report

Static analysis result for SHA-256 303752f8fed2324e…

MALICIOUS

PDF

70.7 KB Created: 2020-11-10 07:59:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 58a98cf05b571e59e5020181ddba3429 SHA-1: a2bdc0c0e587ea8b07906a2b3d505191c585977f SHA-256: 303752f8fed2324e54969ac79af86d5a93c9a1e96411031f1c9101e97a7891a1
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffking.ru/aws?keyword=suzuki+boulevard+m50+hp In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375705/normal_5f9809b9ef181.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/09918f45b4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368782/normal_5f89d25d4bb00.pdfIn PDF document text
    • https://gabegolixen.weebly.com/uploads/1/3/4/3/134368455/dokevu-felibumekik-kogaralumu-mojunek.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/zikeko/5982811775.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/16775195643.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/jisuvimez.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/juxoduzuxefexuliwijipe.pdfIn PDF document text
    • https://s3.amazonaws.com/pezufatexo/fadixutagakuvofirosetalod.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/57922113630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8601ebb5-c0cf-43a6-851c-b7d57dc56c79/house_of_a_1000_corpses_full_movie_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/covalent_bonding_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tibovubowilex/noun_worksheet_high_school.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_off0000d54e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54E 5704 bytes
SHA-256: 372d45a24b156a6275455a835ca739ce52dfb08104bb2955418cd181a4213923
font_01_sfnt_off0000e898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE898 11156 bytes
SHA-256: cbb978f18122388ad334a71de1e386a17d62951c5236b0acc220e5393f92c4b5

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