Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff97d9a0988d824…

MALICIOUS

PDF

71.9 KB Created: 2021-02-19 14:55:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 642288b94fab9103404d6803ff8d800a SHA-1: 23043e0134dd410becaabe6405f9823894171d12 SHA-256: 5ff97d9a0988d8248e5a3832ecf22673e479bd44b9702ba1fc03dcb4d95d6fbc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://leonvi.ru/wix?keyword=rhythm+exercises+eighth+notes PDF link annotation
    • http://xanarixumafiju.iblogger.org/kibolegoburizuzarifi.pdfIn PDF document text
    • https://cdn.sqhk.co/lalivaga/gqjjjjh/69041714211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460694/normal_5fd30c6924718.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393183/normal_5fe4ff8c7082b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467979/normal_5fdb1e0bd7f13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402297/normal_6010f4a7e6f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454544/normal_602f6bd7eb387.pdfIn PDF document text
    • https://sesifubonimexa.weebly.com/uploads/1/3/5/3/135317238/lobifupovuj.pdfIn PDF document text
    • https://pumejikugo.weebly.com/uploads/1/3/0/9/130969330/9848217.pdfIn PDF document text
    • https://kiwaluraxipexe.weebly.com/uploads/1/3/5/3/135326690/mejebepivolife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482407/normal_5fd85a1594f06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453118/normal_600cf1e83c2ba.pdfIn PDF document text
    • https://velazidolis.weebly.com/uploads/1/3/0/9/130969689/f0c18fb.pdfIn PDF document text
    • https://cdn.sqhk.co/somepizeko/xjhMxd9/tokekido.pdfIn PDF document text
    • https://wajizewikibi.weebly.com/uploads/1/3/5/3/135326478/pidijapafowibitedi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421209/normal_5fcb700229f3b.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/mujevubutukoxu/twilight_movie_a_thousand_years_song.pdfIn PDF document text
    • http://teveniwavabubak.rf.gd/94856063247.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/bhojpuri_gana_bhejo_video_ing.pdfIn PDF document text
    • http://ramimivojis.rf.gd/what_note_gets_4_beats.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/apc_smart_ups_2200_xl_battery_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/58551785613.pdfIn PDF document text
    • http://rirovaxodebola.rf.gd/74562938623.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_off0000db68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB68 5148 bytes
SHA-256: c86f1962864070541b213e6a9ae6872a612f722b7aa9f092c994935a2815832d
font_01_sfnt_off0000ecd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD7 10508 bytes
SHA-256: a6e0133c01f3f514567ab26d2fc23da2c97c4248fb09744a00167b152bf19ab3

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