Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c7320c910ba78e1…

MALICIOUS

PDF

67.6 KB Created: 2021-02-13 22:21:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c4465da810c05eb57c5ffed9e2083a82 SHA-1: 207347e175be9e024b7e9a3952de093b00b86b69 SHA-256: 0c7320c910ba78e1722e57930be80d452b68cfedbabacbd00b11df9d24db1d48
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://jacksth.ru/aws?utm_term=netflix+offline++location+android PDF link annotation
    • https://cdn.sqhk.co/gomiwopizi/vjbcic6/change_text_notification_sound_android.pdfIn PDF document text
    • https://gaxuzuwe.weebly.com/uploads/1/3/1/8/131871814/rirezibobubezam.pdfIn PDF document text
    • https://bisuxijux.weebly.com/uploads/1/3/5/3/135323954/589c79ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390664/normal_600642eeb4d5f.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/I9DNicV/super_mario_run_how_to_change_characters.pdfIn PDF document text
    • https://mabatuba.weebly.com/uploads/1/3/5/3/135303696/barabubijetoji-gudipu-xaretan.pdfIn PDF document text
    • https://bozadabeduli.weebly.com/uploads/1/3/4/8/134869561/3899524.pdfIn PDF document text
    • https://xuleminemixek.weebly.com/uploads/1/3/5/3/135333740/jikeximev.pdfIn PDF document text
    • https://cdn.sqhk.co/kukelagalefe/9ifgi57/microsoft_authenticator_mobile_app_configuration_failed.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/zupenafud/boot_camp_assistant_macbook_pro.pdfIn PDF document text
    • http://denuvadejo.rf.gd/pixozufabapupedovutuse.pdfIn PDF document text
    • http://vuxijupobagaf.epizy.com/ledexogevujafisepud.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/gezineb.pdfIn PDF document text
    • http://ritanuwo.epizy.com/aldous_huxley_collected_essays.pdfIn PDF document text
    • http://jutibigata.epizy.com/207140320.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_off0000cd23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD23 4872 bytes
SHA-256: c155284a09a640ff4ba02701092fa6710f8965fd0392ce3dc0e4a72b264e4e90
font_01_sfnt_off0000ddd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD1 10376 bytes
SHA-256: cd2e9c5fbb416c83eefbf4f92d7f649f54dd464f2308e7242edecac098da9e4c