Malicious PDF — malware analysis report

Static analysis result for SHA-256 491c3b4322f575ed…

MALICIOUS

PDF

67.2 KB Created: 2021-02-25 09:03:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4d77f7d6601af5f18c013d5cfe6583d0 SHA-1: 3e04154469e7d8510d6a2b2725dd368c251f31b6 SHA-256: 491c3b4322f575edefffc2f756f242f3abb411eb3d57c3c4374b2c7de939772d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://bologen.ru/wix?keyword=west+lyon+football+schedule PDF link annotation
    • http://momentshop.website/81683742244e3ehz.pdfIn PDF document text
    • http://rameautbxy.space/wd_my_passport_wireless_pro_installation8xe0y.pdfIn PDF document text
    • http://good-production9.site/cucumber_extent_report_githubz5ssu.pdfIn PDF document text
    • http://kengoru.space/wh_questions_exercises_all_things_grammar10vj1.pdfIn PDF document text
    • https://dajidavibaral.weebly.com/uploads/1/3/4/6/134606929/wufip-jorujikud.pdfIn PDF document text
    • https://leduxuma.weebly.com/uploads/1/3/2/8/132814900/3135917.pdfIn PDF document text
    • https://jelonuzekuxenu.weebly.com/uploads/1/3/2/8/132814084/vebajirifuvukujuso.pdfIn PDF document text
    • https://lidugozomamaxo.weebly.com/uploads/1/3/1/6/131606349/5035467.pdfIn PDF document text
    • https://zojufagilazit.weebly.com/uploads/1/3/0/9/130969654/7366409.pdfIn PDF document text
    • https://tebojejuket.weebly.com/uploads/1/3/4/7/134764489/lofev.pdfIn PDF document text
    • http://bt-management.website/how_to_connect_qkk_mini_projector_to_iphone6mj0m.pdfIn PDF document text
    • http://klyshsheff.xyz/suxebajexikopujixosevodo926pl.pdfIn PDF document text
    • http://cupe1.ru/26637460732pihvm.pdfIn PDF document text
    • https://zuranuwazob.weebly.com/uploads/1/3/5/3/135332575/6239780.pdfIn PDF document text
    • https://wosuletoxo.weebly.com/uploads/1/3/0/7/130739711/4513315.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/cardiovascular_pharmacology_book.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/grama_sachivalayam_engineering_assistant_key_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/ccna_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/bloom_energy_ipo_prospectus.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_off0000cb1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB1B 5268 bytes
SHA-256: 381eda5762c86d8f51de3be605f668f6d936f54bcdec00f8247596e1320e79d3
font_01_sfnt_off0000dd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD17 10104 bytes
SHA-256: d24ead87c6a9689f9efe93ade7481c8efe4b35e099f022411f058f608c036b72

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