Malicious PDF — malware analysis report

Static analysis result for SHA-256 46ea8f79089a1e40…

MALICIOUS

PDF

65.2 KB Created: 2021-02-19 09:30:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 201e63b8b5bcbd146ea97df1e5ab3b82 SHA-1: a09757ba6e38a18157873d2031bdc5c12f8f7917 SHA-256: 46ea8f79089a1e40b706c0cc085dbba815fd5f852b029f1ac350eeb92aab06ea
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/wix?keyword=nomenclature+practice+worksheet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386620/normal_60226f29c4e0a.pdfIn PDF document text
    • http://livecopyrightverification.com/geekvape_aegis_legend_200w_-_firmware_upgrade_2018qbvvu.pdfIn PDF document text
    • https://xivupofe.weebly.com/uploads/1/3/2/6/132681771/sikijirinijoku.pdfIn PDF document text
    • https://letonezesuju.weebly.com/uploads/1/3/1/3/131383444/wukirokoda.pdfIn PDF document text
    • https://lulegosepo.weebly.com/uploads/1/3/0/9/130969478/xavex_witug_wugolawa_liputeromokuz.pdfIn PDF document text
    • http://digitalcalakk1.xyz/bad_girl_video_songyj5kf.pdfIn PDF document text
    • http://minuette.me/free_netflix_gift_card_codes41cj2.pdfIn PDF document text
    • https://mulofujuxemo.weebly.com/uploads/1/3/0/8/130874025/2634044d38ca46.pdfIn PDF document text
    • https://toginomaba.weebly.com/uploads/1/3/4/0/134042469/xofukex_nodewonewu.pdfIn PDF document text
    • https://kufidadifijerid.weebly.com/uploads/1/3/1/4/131407945/tasovowunu.pdfIn PDF document text
    • http://1xbets-reg.site/cracking_the_dream_code_book4tyrs.pdfIn PDF document text
    • https://wugizagopa.weebly.com/uploads/1/3/5/3/135311922/3568027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444356/normal_6016d51900184.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/begijufadi/dcfs_mandated_reporting_training.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/cajun_fiddle_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/weather_report_islamabad_next_30_days.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/marvel_super_war_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/jemukomor.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/83913158799.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_off0000c2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AD 5300 bytes
SHA-256: 189fad648b308b6292f45a13a9d3d41737e30c1fd6bb3bd441fe8b5cbf9c925c
font_01_sfnt_off0000d49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49B 10212 bytes
SHA-256: b4a1d4bc5f356e89d929663d0272cbdcead0a1278f84b140a205368f75e74627

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