Malicious PDF — malware analysis report

Static analysis result for SHA-256 733100c70fdf4ae1…

MALICIOUS

PDF

72.9 KB Created: 2021-02-23 02:15:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 851fb958bd12cbd974f7fa0cc251760e SHA-1: 6eef017a051b4c74f2311c65525a39367359610d SHA-256: 733100c70fdf4ae150add78cddf50faf5a11d599fcf44a600cb3f14dcd70a5e2
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://maypoin.ru/wix?keyword=evaluating+websites+worksheet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381988/normal_5fe556f9a7b42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366020/normal_5fc853354e89c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419849/normal_6009dbf4144fa.pdfIn PDF document text
    • http://pet-guru.shop/kagewejozizagewixovooo537.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/aViggeC/gigalife_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/g1hQ3gg/class_dojo_app_instructions_for_parents.pdfIn PDF document text
    • http://bazis-rostov.com/58468842850xgk0e.pdfIn PDF document text
    • https://cdn.sqhk.co/vagizabibo/iXKjhU5/stickers_messenger_game_of_thrones.pdfIn PDF document text
    • http://pokupka.space/one_thousand_and_one_nights_urduy9m8r.pdfIn PDF document text
    • http://winoorama.space/zewuzogauu34u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385631/normal_5fc5749b81942.pdfIn PDF document text
    • http://itclick.pro/digital_photography_complete_course8160q.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/2jiwTBs/lubemafuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://todosix.epizy.com/71732039016.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_off0000e0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F6 5260 bytes
SHA-256: 10e8b2fee7506f3266b3dba60cd32af3ab1ce831e633c249ce4a584e3fd7aed0
font_01_sfnt_off0000f2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EA 10396 bytes
SHA-256: 4d84b901e2f753444d1e4ad1386ffb871216d2a2c27b6cd12be39b1a646eac7b