Malicious PDF — malware analysis report

Static analysis result for SHA-256 917bf03a04f09e0a…

MALICIOUS

PDF

69.0 KB Created: 2020-11-10 12:07:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 84bd3ba0e091fdec631c8d2a22e43bee SHA-1: 88f8e6919d5b068367fb0217f70b874792e18021 SHA-256: 917bf03a04f09e0aa6a6ab10925291810650ab511c81d68efc7d6aa98c44a7a7
184 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
  • 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 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://traffine.ru/123?keyword=d+and+d+5e+genasi In PDF document text
    • https://xesapidad.weebly.com/uploads/1/3/4/3/134346602/fepafavokupof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5f88fa4a01295.pdfIn PDF document text
    • https://katubebadidi.weebly.com/uploads/1/3/4/4/134474785/patelew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_5f8de69e38a32.pdfIn PDF document text
    • https://jajipovel.weebly.com/uploads/1/3/4/5/134527293/zijebusamuripapebaza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379859/normal_5f8c523150fd0.pdfIn PDF document text
    • https://pozosukezogi.weebly.com/uploads/1/3/4/3/134386022/mexovasonutid_fezapudagakujup_rarotizi_viriserugex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_5f9266c87c7f3.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/4fc1fc801610.pdfIn PDF document text
    • https://betutinixe.weebly.com/uploads/1/3/4/4/134481053/vapuwo.pdfIn PDF document text
    • https://mutabitobivu.weebly.com/uploads/1/3/4/6/134636436/e7c5e2dca59ee.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/a92aaae0-4f78-4d58-99dd-65f0659c70df/95603744267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8ba2961-bdc7-47a9-a13f-e49a0db5e999/vanagon_subaru_conversion_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d52d1601-e5eb-437d-a3d7-44cd93c3faa1/41080658681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/148b7c98-faae-4567-9e38-87d0016fdaf4/25051774668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b0d6cef-653a-4bfd-8733-c07eb0d20fe1/breast_cancer_tattoo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d67f7270-1443-456d-b300-39d2158caaa9/pertaining_to_the_armpits_medical_term.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_off0000d3c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C3 4988 bytes
SHA-256: afcc3ae5582283a9e6c00b88e98eae49ba02dd91000537fe5ee10839808cbfc2
font_01_sfnt_off0000e4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D7 9928 bytes
SHA-256: 624d6f43209c631c1ad2a44f6ad57c592473f48e393d87edae6abc4506ae6cf6

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