Malicious PDF — malware analysis report

Static analysis result for SHA-256 16f98dfc735a7c03…

MALICIOUS

PDF

71.6 KB Created: 2021-02-22 04:24:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 38c61c5054c7716121fbc72b6f0190c4 SHA-1: db7d4a7c7741ca3782e54e42fba6420d7b86763b SHA-256: 16f98dfc735a7c03db5191db8da804471ddaec0338a0313a7954c5d070a00316
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=john+deere+l110+ride+on+mower+specifications PDF link annotation
    • http://peludofnor.fun/20214132689vw5z7.pdfIn PDF document text
    • https://safesawugu.weebly.com/uploads/1/3/2/8/132814337/muxejemi.pdfIn PDF document text
    • https://bowonalixatan.weebly.com/uploads/1/3/5/3/135347428/bamutepadugota.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403540/normal_602f9586d4919.pdfIn PDF document text
    • https://kusavavatixe.weebly.com/uploads/1/3/4/8/134878613/6043655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384295/normal_601ba7b6219a1.pdfIn PDF document text
    • https://fepepifufom.weebly.com/uploads/1/3/1/8/131872298/6580987.pdfIn PDF document text
    • http://creditstar-kabinet.com/notewuz22yfg.pdfIn PDF document text
    • http://jukomanafow.22web.org/87296189260.pdfIn PDF document text
    • http://sdek-24.cc/all_tamil_dubbed_movies_in_tamilrockerslbla2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409113/normal_602629a38a716.pdfIn PDF document text
    • http://vannlight.ru/947145672017lo7v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428083/normal_60010dc0bc5dd.pdfIn PDF document text
    • http://xujukega.66ghz.com/lazaxevokagagadim.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luxixeg.epizy.com/wefaw.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD911 5668 bytes
SHA-256: 1b98ea3d630abe40ecca83649260875d6f8ae64dc37e26c3c2d47e003d55660d
font_01_sfnt_off0000ec49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC49 10828 bytes
SHA-256: 15923ddc6198e455e8efcf7008a6b88ebf37a064b2066afb49b64ae9b0c58dc0