Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2c9dd1c3ec7d71…

MALICIOUS

PDF

66.0 KB Created: 2020-12-25 07:44:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 66aafa1af59e8d81854fdf53fc33d415 SHA-1: 2c8f9daa7e44a0770b086633039b2d5969ee8e1f SHA-256: 7e2c9dd1c3ec7d7154e23875409f86967f3e70a815b702802eb0670b0250571e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafficel.ru/wb?keyword=cat%20warriors%20games%20on%20scratch PDF link annotation
    • https://wimejevufafej.weebly.com/uploads/1/3/4/3/134379448/nosiregegosubul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459482/normal_5fcba4e456369.pdfIn PDF document text
    • https://cdn.sqhk.co/kapidibewomu/jdja2s6/download_fruit_nibblers_mod_apk.pdfIn PDF document text
    • https://lokeduvedip.weebly.com/uploads/1/3/4/8/134885922/tuwijaradopabulijoka.pdfIn PDF document text
    • https://pekiwuvigefarov.weebly.com/uploads/1/3/4/7/134766825/f6d85dfe46f4215.pdfIn PDF document text
    • https://tigelulipuneve.weebly.com/uploads/1/3/4/7/134746657/1378574.pdfIn PDF document text
    • https://gadolelexuzited.weebly.com/uploads/1/3/4/4/134486477/dezotisotagape.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469126/normal_5fd67e9b156f1.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/dewutexorob/damusolelinejura.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/approval_sheet_in_research_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/028a26b1-c3e9-411b-a63c-c5989c870d46/jurnal_internasional_akuntansi_manajemen.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/vuzuzikiwagamolorese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63ba43b1-8800-42af-adf6-9375c273d289/gajikikabonujabeguf.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/eleanor_oliphant_is_completely_fine_book_synopsis.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/culligan_water_softener_manual_recharge.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_off0000c5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5FE 5176 bytes
SHA-256: 2fc01e7445042e7d138c719ff9fbbfecf4837f563534492fb6ceea7acf7b55a7
font_01_sfnt_off0000d77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77B 10500 bytes
SHA-256: 4fc8fc6d36c22432df2af8ff410810aab3df547d21045013e5028493049f75ba

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