Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7f098536ba10a8…

MALICIOUS

PDF

41.5 KB Created: 2020-10-05 20:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8ab92932405f070e734637793f891266 SHA-1: fba10243e5bc91958ef9ea8410c51c4da4cb681f SHA-256: 6e7f098536ba10a845fc72a0fd47c1db61059a5516002c621aed0c5cefd72ed4
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/strik?keyword=5th+grade+math+enrichment+worksheets+pdf In PDF document text
    • http://files.hstriclub.org/uploads/1/3/1/4/131406365/foxabef.pdfIn PDF document text
    • http://files.groovybohocandles.com.au/uploads/1/3/1/3/131384547/vimawomufifa.pdfIn PDF document text
    • http://files.missionhouserealty.org/uploads/1/3/0/7/130739772/7639342.pdfIn PDF document text
    • http://files.zeropointmechanic.com/uploads/1/3/2/8/132814892/bazukev.pdfIn PDF document text
    • http://tolaw.kbitzphoto.com/uploads/1/3/2/8/132814097/3927fdb8c90.pdfIn PDF document text
    • http://files.fureverpetrescue.com/uploads/1/3/2/8/132814096/b225b4.pdfIn PDF document text
    • http://zawadomus.bradleyoleary.com/uploads/1/3/0/8/130874104/9821335.pdfIn PDF document text
    • http://files.highelevationwrestling.com/uploads/1/3/0/9/130969185/c62ed.pdfIn PDF document text
    • http://zumujo.personalprotectioncanines.com/uploads/1/3/1/0/131070381/ledopazisasufa-maxomu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3368/0282/files/apk_ram_expander.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baaea1e4-4911-4646-8570-b5d1367e6760/baruravetume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7c18eff-f109-4215-9413-13120811c6ce/jexetodozapefukug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d122742-96b4-4a14-981c-264464c143d3/45350281713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7fc68c5-6d2f-40b6-a4ec-983bc45d7c83/zupilarowajiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6a14429-9798-487b-88ff-e4b11fccc2a5/61947557599.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 5

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_off0000630e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 5724 bytes
SHA-256: 6992826011a0b18506bde9582b5ec0a64740d444d0df414e93de6cc0d08b80ea
font_01_sfnt_off00007674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7674 10180 bytes
SHA-256: f0d697aaf2926922eb865dda47b9053bd8a6b6f0acea92a3fc060f61c4db0ac1

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