Malicious PDF — malware analysis report

Static analysis result for SHA-256 9468dd045b011bc2…

MALICIOUS

PDF

72.5 KB Created: 2021-03-04 15:06:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8717f5d3b096095d0f0f0185fa05b2b0 SHA-1: 37ecb234d35d5eb5cfbca771ed0abdf1405ee8f6 SHA-256: 9468dd045b011bc2ba6c7719c0d1c5779605dd34465b1dc6dff73cbd04fd41e9
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wix?keyword=animal+cell+diagram+blank+worksheets PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403422/normal_600360e8e5191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_601459527bb56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474176/normal_600d049a66eda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501361/normal_5ff0f84c109c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467318/normal_5ffd4d56370f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393044/normal_5fd7d7449bbc4.pdfIn PDF document text
    • https://cdn.sqhk.co/salefudodid/FGW0Ige/hockey_nations_18_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413473/normal_5fce77bc8933b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389606/normal_5fd2a4c853592.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/if1lygh/download_aplikasi_kpop_music_game_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/mixasuwekov/hhivhfo/pressure_washer_extension_wand_harbor_freight.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405430/normal_601881b443dd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478141/normal_5fde03cb1e70b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379731/normal_5fe18d4b86873.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5fd658e6908c6.pdfIn PDF document text
    • https://cdn.sqhk.co/diwiporeb/KonhfCg/voice_recorder_download_mp3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a6b1860-06ba-4b8a-b976-a153e8595e74/epson_wf_2540_sublimation_ink.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86181101-3cb5-407e-bad6-11cb6bdbc2cc/dexijowagaromimejaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a914d85e-b04b-4c23-ba7b-dfb9e13aae6f/3072308624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3813342d-b4ae-45ba-ad74-a37275f7f337/alex_rider_point_blanc_book_summary.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_off0000debc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBC 5640 bytes
SHA-256: 0c8f9434c6d542e8f63728454c37de00b39765fda00b7600be62d87368119625
font_01_sfnt_off0000f1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CA 10144 bytes
SHA-256: a5d3425e35173cd3dc008c9e3a28805ac0458d2e4bd195e70198d3fc65a6c097

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