Malicious PDF — malware analysis report

Static analysis result for SHA-256 20bf6fdfcc2f6a6b…

MALICIOUS

PDF

75.2 KB Created: 2021-03-18 00:02:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7f1a67c6db960a0d6e4cecd2ee29fdf0 SHA-1: 9ad81d2a18c9b3c138c51de1d2975294ff2836cc SHA-256: 20bf6fdfcc2f6a6bb1fc7ad1a52a6935c666ee7f13e03e3a7384c28c52027f63
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://crophysi.ru/award?keyword=the+babysitters+club+graphic+novel+pdf PDF link annotation
    • https://cdn.sqhk.co/lexikegije/gzSg1ic/fizasizejomovigomal.pdfIn PDF document text
    • http://vurejowug.mypressonline.com/love_you_more_than_anything_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/hgie7Mc/ten_pin_bowling_balls_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/rufonova/dIbdhj0/forza_7_car_list_spreadsheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425723/normal_5fe035807dd47.pdfIn PDF document text
    • https://cdn.sqhk.co/felolavap/gcTgg4E/extinction_coefficient_k_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/79gQhdb/mods_for_minecraft_1._16_3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385869/normal_5fe31080e69fa.pdfIn PDF document text
    • https://cdn.sqhk.co/lisupixiwe/idhbhaR/70733442563.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460694/normal_5fc8de84befa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454170/normal_600b2455656d4.pdfIn PDF document text
    • http://kifejuja.medianewsonline.com/xufarotalanuduxojuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448986/normal_602ca9c679946.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379742/normal_5fc66a243cca3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_60151ccd1c727.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/short_moral_stories.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/ehdSwv4/mimazesenibevobugav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414358/normal_60215ff13cf11.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/mexesazaxasa/niwilijuvesawurevelozapam.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/aambala_video_song_hd_1080p_free.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_off0000e4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F6 5668 bytes
SHA-256: 16097f692cbc6bbd7b92b4d83d559c7368e305261ba69412a005312a422fc4b6
font_01_sfnt_off0000f840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF840 11596 bytes
SHA-256: 6123ceb39a179195d4423527c61d3faee3b3979fb2584f298e3f25b52b7da8a0

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