Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd230d577fa4112…

MALICIOUS

PDF

68.5 KB Created: 2020-12-28 20:40:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: a0a830d0def7605ec57d2df98b030930 SHA-1: 50f8795f3e804cd387dbfe7484d01ec99e248098 SHA-256: acd230d577fa41129be18428f8dae454b477b0022ba0d11fa60739b8e1113232
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • 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://gettraff.ru/123?utm_term=principal+parts+of+irregular+verbs+worksheet In 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/01975476-f5c9-43cf-b131-b473609ad4bf/fitarelupejirigakibob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f44c554d-039f-432c-8a3c-855d67243fb4/wadepif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f4659a6-c55a-4fd9-a2d5-3812548691d5/dragon_knight_dota_2_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/garmin_updater._exe_v._2._8._0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1be1b15f-6f44-40a1-a9ee-966acc424c3f/15930773839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3e65fd6-a1e2-4e11-a8f1-9cbbba211c34/98316598931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30e168c2-8f2f-4fee-9796-63abf40d950a/performance_teknique_icbm_775_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eef2b8ae-989d-42a5-9dee-ae709d59632d/nicotine_panic_at_the_disco_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/xerigegufafixikedopigubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c98a62a4-2642-4267-a06b-46ef322e994d/jofeji.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/dry_training_for_freediving.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb070620-cac0-4b5b-9b48-45cebe42e546/66075229755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc7d6df2-9a14-4d9f-90c7-bf367d15b11d/78902401289.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/upton_hill_regional_park_hours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1499a9dd-271d-440e-87e1-4dd92e10748c/zijuporutoku.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_off0000cf9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9B 5632 bytes
SHA-256: 4c803d09eb0dc72e66fe865c75efd5509703d59215648132699c6affe9223441
font_01_sfnt_off0000e2d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D2 10048 bytes
SHA-256: ac60250677da4ac217989a932a8e490b775841132040bae474b1cb1a69c31eb3

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