Malicious PDF — malware analysis report

Static analysis result for SHA-256 3910b7078abd9fa4…

MALICIOUS

PDF

38.6 KB Created: 2020-10-02 23:33:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 80ed14fcb54fa113bcff2f864f533cf3 SHA-1: 92a1fe2523a4d9dbc2b8ae63e32bbd5646df8767 SHA-256: 3910b7078abd9fa413d99755f7691bc88e7a807311e7c49a7863052baf6bd928
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://ggtraff.ru/strik?keyword=angles+in+a+triangle+worksheet+ks2+pdf In PDF document text
    • http://babevar.obxshagclub.com/uploads/1/3/1/6/131637148/658016.pdfIn PDF document text
    • http://files.oldbooksonfrontstreet.com/uploads/1/3/1/4/131453713/nagedepud-zefekebusa.pdfIn PDF document text
    • http://zotidupe.flipbookpublishing.shop/uploads/1/3/2/8/132814343/2116599.pdfIn PDF document text
    • http://files.mantleofelijah.org/uploads/1/3/1/1/131164239/637124504ed.pdfIn PDF document text
    • http://dujafata.guqintables.com/uploads/1/3/0/8/130874565/viguwok_wavisup.pdfIn PDF document text
    • http://files.dallasclarnette.com/uploads/1/3/2/6/132681824/fcc2fb14362836.pdfIn PDF document text
    • http://juxamiv.musiceventsvt.com/uploads/1/3/1/4/131407102/fezegigix_banomu.pdfIn PDF document text
    • http://vusemod.westvirginiaballroom.com/uploads/1/3/0/7/130739674/914152.pdfIn PDF document text
    • http://files.yourdfwattorney.com/uploads/1/3/0/7/130739012/kufanadosijikaruwu.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/0e3a0478-8e69-4d8b-8781-6c682f3e86d8/10956098978.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43a83dea-5883-4673-848e-a3381164e525/85273558502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5f55bf1-0056-44d7-b315-7f68699dfd4e/70630070990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9335266-a11f-4681-b407-3521a137e331/48274773122.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce080384-edde-47ae-8123-43d00d3c6916/60274539220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f6cea84-4c77-45b7-b388-b74a8882ea9e/45251713844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07357684-4c90-47a3-a51e-d56615f9f920/fawiledowexuzunid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a11fb0ff-5562-4370-b2cc-22c3e54b4275/85787766256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff013459-4ba4-47a0-9a83-3c2b0e85b881/lezifavusogameduwuw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C3D 5580 bytes
SHA-256: 7fe28071180288dd4e7b4b32cd107dd6d807a4e657462aa184c31895c7ed6341
font_01_sfnt_off00005f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4A 3128 bytes
SHA-256: 6967b163aab7518dc30e82ce99b84cd7f69d21f81cf4225d8f08db93334c72db
font_02_sfnt_off00006c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0C 9604 bytes
SHA-256: 37f13c9d6fc74ab89e0405b37aa75065728c35f89061d9573bfe8023eb71dff9

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