Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d58d039e610ea2…

MALICIOUS

PDF

35.2 KB Created: 2020-10-02 14:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0d7d69c65f39636ad7fa73be760c2f13 SHA-1: 5e14e58b59b80bc1e365d700c9a99c53f6adf907 SHA-256: b5d58d039e610ea280ba986bdf7918178068390c3bd8ad32bc13e9a1efdad4e1
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/pify?keyword=110+gallon+aquarium+for+sale In PDF document text
    • http://files.mgrantmedia.com/uploads/1/3/1/6/131636886/podulek.pdfIn PDF document text
    • http://files.digivationsxgens.org/uploads/1/3/0/7/130739533/944123.pdfIn PDF document text
    • http://files.leadershipsystems.com/uploads/1/3/0/7/130740210/9731581.pdfIn PDF document text
    • http://files.sylverdesign.com/uploads/1/3/0/7/130740011/7979f1621394f6d.pdfIn PDF document text
    • http://files.calvarylutheranscottsbluff.org/uploads/1/3/2/7/132711999/6d8d1fe350.pdfIn PDF document text
    • http://files.astrologyoncall.com/uploads/1/3/1/4/131407324/23741.pdfIn PDF document text
    • http://files.stevewolfeaz.com/uploads/1/3/0/7/130740521/1259656.pdfIn PDF document text
    • http://files.nzgirls.org/uploads/1/3/0/7/130776525/xuxet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/66afd4b5-6dd6-4554-9bcc-869c25fc083d/fevivaneliki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dc49c6b-6c76-4e96-8a5b-f7683255df69/rexemilitikojelimajib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dec95e74-b1e7-46e5-8751-37659d31bf62/loxibodobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75ced46-2bf2-4ef2-85c3-539c701fd41f/lajevezakosakasarewukeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5d6816-4226-4537-b519-01156da2fcfb/fanopiduxibekexuzotaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78440876-09bc-414a-b25a-165ff959ec0b/xojokazimegajadixure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72f025f9-7174-4223-8c6d-95bd73f5433b/riwelegusirirokajodevunul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f94039-c5d6-4892-a1e5-80a9e9dad13e/30241165003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48d5bcaa-1962-4352-90cb-b375b3b9a8a0/batajuvozusemipekux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/956eb4ff-5b83-4b76-ade7-d4bdca9eefaf/17160158675.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

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_off00004d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D0A 5312 bytes
SHA-256: df726f3d48c494274b38f108eb11842a5907e7d74aa60ff63485510efac89df3
font_01_sfnt_off00005f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0B 9612 bytes
SHA-256: d9d950336c5d23e84e76b2ad33294892afed43475cbd400f20c468fafaa30e3b

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