Malicious PDF — malware analysis report

Static analysis result for SHA-256 0422a9c065130c3f…

MALICIOUS

PDF

78.5 KB Created: 2021-02-21 07:25:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4549c7d8bcba3a9bba81504b503ef2bf SHA-1: 5041347d046f1823d68876bd61f63390c72e6918 SHA-256: 0422a9c065130c3fc0866743954838014f6ed51b957c294b344ba32cb6895d76
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs suggest the document is part of a phishing campaign designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • 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.
  • 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/123?utm_term=what+is+tcp+ip+protocol+suite In PDF document text
    • http://graatorama.fun/xuxonafebizaverekogav7nd9.pdfIn PDF document text
    • https://cdn.sqhk.co/posebozej/diajiji/ohio_guidestone_canton.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413227/normal_5fcc9f801f8cf.pdfIn PDF document text
    • http://modernstyle.pro/togutffj6h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482208/normal_5fef98ec1e217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383131/normal_5fc6b05f3297f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449965/normal_602477c028ef8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383678/normal_60058e93828f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450259/normal_5ffab2875dbca.pdfIn PDF document text
    • https://cdn.sqhk.co/lukavago/gdAupki/vipawi.pdfIn PDF document text
    • http://1yamal.space/399629560515nvku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478968/normal_5ff26e78727d6.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/hfjAgjM/65363308900.pdfIn PDF document text
    • https://cdn.sqhk.co/suxepemup/jdjjj3p/talisman_origins_vs_digital_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464313/normal_6031c4c81373b.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/Zijieco/69564779776.pdfIn PDF document text
    • http://cetly.xyz/lojobazezunexafmqarh.pdfIn PDF document text
    • http://livecopyrightverification.com/towegubupoduboihoz5.pdfIn PDF document text
    • https://cdn.sqhk.co/xemuxebu/jn2rnJy/nasa_news_moon_mission.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/sugowubuf/mr_bean_movies_list.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/poxusuxopabijonizimivitef.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/netflix_app_free_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/best_catholic_songs_2016_mix_2.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_off0000f84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84A 5032 bytes
SHA-256: 7ab297b30eb99699946ec8de72b5a92ffcfedfbfb982b48ef87bed12c5954d85
font_01_sfnt_off00010972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10972 10276 bytes
SHA-256: 657f00ea9c4952932bd7738044c3da47b88742fa2509d0828f5bff78471d65b8

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