Malicious PDF — malware analysis report

Static analysis result for SHA-256 3560c51e459e8c4a…

MALICIOUS

PDF

72.5 KB Created: 2021-02-12 22:09:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e49dda227e2ab9c15ed576c835aade74 SHA-1: c972658f906f6de2b9888dba4f504b11d2f3cdb3 SHA-256: 3560c51e459e8c4a064f64b01c520c8a29ac0250e9f0d3fce6069e82c5503f05
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/wix?keyword=strike+force+heroes+2+hacked+cheats PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367268/normal_5ffe70aac259e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393761/normal_5fc9115e4449f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490918/normal_60208aa085730.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/BUPhegf/depinix.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/irCjeWH/teddy_bridgewater_vikings.pdfIn PDF document text
    • http://kamaz-ftc.com/753616610972mnwn.pdfIn PDF document text
    • http://zelopaqq.xyz/exploring_creation_with_general_science_student_notebookg67jw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487894/normal_600b4392b6aba.pdfIn PDF document text
    • https://cdn.sqhk.co/tatomaxeriri/6iihcBo/29833295481.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/gchagSn/launcher_pro_apk_minecraft.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411935/normal_5fd95899dafce.pdfIn PDF document text
    • http://nadahul.ru/vusev046tq.pdfIn PDF document text
    • http://regse.website/509589738084o2kt.pdfIn PDF document text
    • https://lapebezufidasaz.weebly.com/uploads/1/3/4/3/134316617/92cdcb7fe6c0d8.pdfIn PDF document text
    • https://viwefinorix.weebly.com/uploads/1/3/0/8/130813514/7078166.pdfIn PDF document text
    • https://vosojexurixug.weebly.com/uploads/1/3/1/0/131070535/4142383.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ded3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED3 5376 bytes
SHA-256: f15c451a1fc084e4cd134ed1ed12c404a61f6acbe99718540deb2d4a7989fe76
font_01_sfnt_off0000f11a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11A 10408 bytes
SHA-256: 184253ef028b7a428ee5d535c8fddb30913a95a3b1a3fcff4e2a7922aa32cbe3