Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa85c0b9ccfe55ec…

MALICIOUS

PDF

66.4 KB Created: 2020-11-30 17:41:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 626c88964e291fba00838cc23213b3cd SHA-1: 8b8ca0c35183eaed4e47690efe7833ff741b371b SHA-256: aa85c0b9ccfe55ec4d613053aa852c8d758122edc58fa19a0c2b8982b6e2b367
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://cctraff.ru/123?utm_term=5+gallon+cooler+with+wheels In PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_5fc05e780c7ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383680/normal_5fad8ed4b3256.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414174/normal_5f9c2802513de.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/wujixus/marvel_avengers_academy_apk_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/biwaset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d85c277b-5d68-4a02-9eba-1a026220d186/nizisubux.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/essay_writing_worksheets_for_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/bailey_junior_high_arlington_tx.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/simufifujajojedow.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/34168179066.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_off0000c913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC913 5184 bytes
SHA-256: 82c683e48deaa124f25e1ff411a70e8000c5a2235567737f1b17107242e98bd6
font_01_sfnt_off0000dac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC4 10068 bytes
SHA-256: e90d543efe2415df387339224b8267a2131c959b38fd4673f82720cde4630521