Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e37e9934892870f…

MALICIOUS

PDF

38.7 KB Created: 2020-10-25 18:39:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ec012215b82b4b4aa44958b2727ab539 SHA-1: 20298cbf225ea999725727e48ef7e917ec2ffa30 SHA-256: 5e37e9934892870fe19f6fa67ac2f9f6bdc160ffb928dd1b770c700c6d4b6d3f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.me/123?keyword=nocturne+in+c%2523+minor+chopin+pdf In PDF document text
    • https://foruvojupizife.weebly.com/uploads/1/3/4/3/134352799/patovel-fejazidede-vulejesadodi-wikab.pdfIn PDF document text
    • https://laguvibokabab.weebly.com/uploads/1/3/4/3/134383318/8315495.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/1076701.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/lukusuv.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/dufipotuxebok.pdfIn PDF document text
    • https://renibopasuviwi.weebly.com/uploads/1/3/4/3/134305424/sozibotadugoxubobal.pdfIn PDF document text
    • https://fisizupesaxog.weebly.com/uploads/1/3/1/6/131636899/91da0.pdfIn PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/dawalomevadejeva.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/7895485.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/9985793.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005a04.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005a04.bin)
    • https://cdn.shopify.com/s/files/1/0496/2212/2660/files/45709684433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/filarafugij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/6528/3238/files/makuxir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9087/7339/files/varazebezovezagur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19491f6c-5f59-4410-b84f-24ff898c26d3/22401865481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9d96e5b-5313-4117-82c1-d9074a7dd0dc/mision_y_vision_de_un_taller_mecanic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/719fbe34-7058-4c3f-869a-be844f63100f/96811764693.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/kiritanenusabadu.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/71456719625.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/63598712004.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 extracted file (font_00_sfnt_off00005a04.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A04 4344 bytes
SHA-256: 4d396e338fc6308cad8a4cac900cb6ed8b2c854542cf6b230de243d33780503e
font_01_sfnt_off000068cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CF 11500 bytes
SHA-256: 7f9ffa2071099acd44629f00468fb725a6e691a3d183abe19949a63ee2ab0feb

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