Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8d8b6f5103262e…

MALICIOUS

PDF

72.4 KB Created: 2020-12-31 23:20:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: da618c3c4cacc7416c5ef6fc5ff9884f SHA-1: 63799d8494c32a54c1f1c3ec659712264c1298db SHA-256: aa8d8b6f5103262e8dcdaeb25a98e85997f04a9902cf3e48183600bd393292fd
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=keto+fast+food+survival+guide+pdf In PDF document text
    • https://cdn.sqhk.co/vovusupa/Jjb5gdo/31727858464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5f934cb38f646.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/8ifgdie/godudibitep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451574/normal_5fa59c7df2426.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417531/normal_5fcbd76d6bd5d.pdfIn PDF document text
    • https://cdn.sqhk.co/sezivalaw/iggcsij/61391314874.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/vhaggV2/chicken_gumbo_sloppy_joes.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzirixowev/djkbVje/easter_cross_coloring_pages.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393209/normal_5f9927874a3c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467286/normal_5fdabaa874a20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455657/normal_5fde4a9739eae.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/gewisetug/anemia_ferropenica_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/37137712620.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/forever_princess.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b30e0b01-13a3-4b8f-af3d-764567c9ff90/libros_para_nios_gratis.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_off0000deb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB6 5236 bytes
SHA-256: 61480201893c4c167d0241d34a97c0fd7dc149bbc51c6b29474973f35754f980
font_01_sfnt_off0000f0a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A8 10480 bytes
SHA-256: 57f13292f093514df063e8a2ae681e33c19e1de0395a104428ba06842356e863