Malicious PDF — malware analysis report

Static analysis result for SHA-256 4789622d22d0fe9f…

MALICIOUS

PDF

65.3 KB Created: 2020-12-16 16:53:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 547883fa8bcb20b75e60ec6d74b210ca SHA-1: bad94ab81a9795107d35fd77dd10d4b251fa44e8 SHA-256: 4789622d22d0fe9f8fc18bc0379ed5056a11831e1ea6a0fddff0f9ef8c7c1ac1
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/wb?keyword=kakaotalk%20apk%20english In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_5f97400075dbc.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/zarusegibitumet/mojexugapetadumajesonuj.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/vawivobofatilukotinereven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d6da1fe-5198-431e-b59a-28e44a45cc5c/blockheads_game_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f61c1f9-aab5-470f-90c3-39e785e641a0/impossible_quiz_2_cheats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79c11051-50d0-499d-ab86-31983ee3e274/10326524488.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/arizona_diet_green_tea.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/post_form_data_using_ajax_mvc.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/autonomous_maintenance_in_seven_steps_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a04b93a8-10e8-4a3a-9ae1-a0e002df5066/xixoxobanatapuzaniledolal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/163136b1-723a-41b6-b119-0d2f2cd7225d/nezizemawixudizo.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_off0000c350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC350 5016 bytes
SHA-256: fcf5272f837aa97bab487b7ad701048bc240e2d1ba02d8846dafe5fc0ab13e0b
font_01_sfnt_off0000d469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD469 10768 bytes
SHA-256: bb3100a4bd762ed9100f2040815a3b7b093a733eeda5526571920315929f4b86