Malicious PDF — malware analysis report

Static analysis result for SHA-256 624a63f4262cbc2c…

MALICIOUS

PDF

72.6 KB Created: 2021-01-19 06:39:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-28
MD5: 10747ce3804668999a889d8028702019 SHA-1: 82b9479c329fe6bf68356e000ddf6bec418aa3bc SHA-256: 624a63f4262cbc2c04c1839eebc0b61dd6fa7731da0f3a0f9aec77a2b3881400
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://traffking.ru/123?utm_term=kell+british+honing+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4452373/normal_5fceaa4ca5417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413977/normal_5fa76971aca3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425738/normal_5fc448adb22c0.pdfIn PDF document text
    • https://site-1177365.mozfiles.com/files/1177365/woxoliveg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470828/normal_5fefe3c55fe81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402948/normal_5fd80b2238782.pdfIn PDF document text
    • https://site-1191130.mozfiles.com/files/1191130/subterfuge_def_francais.pdfIn PDF document text
    • https://site-1227608.mozfiles.com/files/1227608/bahrain_tourism_report.pdfIn PDF document text
    • https://site-1168463.mozfiles.com/files/1168463/39724294476.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391909/normal_6004938d36031.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493578/normal_5fc88044c0307.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/ja2hBxS/69877130650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491168/normal_5feee6980c14a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374203/normal_5f910c426b5c0.pdfIn PDF document text
    • https://site-1206121.mozfiles.com/files/1206121/84227637366.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/ghcUXii/dubafemus.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000dd7c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000dd7c.bin)
    • https://s3.amazonaws.com/tujeviwakirawu/89506973155.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/69373225262.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/bhojpuri_gana_dj_wala_video.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 extracted file (font_00_sfnt_off0000dd7c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7C 4984 bytes
SHA-256: aa1287d686a046f7cb31f1a76373bb8ad0bc3318aa8774322186f9e204d1271f
font_01_sfnt_off0000ee67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE67 11372 bytes
SHA-256: d2db12c435855821534d04b0291f7361d4c82a9fd4109caf609aaf249d21bb79