Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e16eb780b7bdb3c…

MALICIOUS

PDF

83.7 KB Created: 2020-12-30 03:01:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-09
MD5: 01c321f1f982c4429e2bbbb3c18539bf SHA-1: 6e0fd1c94e54ca33eb8d19bd977e619c2323e2bf SHA-256: 5e16eb780b7bdb3ca741907e1e510d216573ef13804b072c9893409ac5a854a9
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://s3.amazonaws.com/dusubonifu/22528901260.pdf In PDF document text
    • https://s3.amazonaws.com/bufipevuril/26149184464.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/clemson_football_forum_247.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456369/normal_5fd39ef81bd0a.pdfIn PDF document text
    • https://zefufewik.weebly.com/uploads/1/3/4/3/134374544/5dfc5d33e48ae.pdfIn PDF document text
    • https://cdn.sqhk.co/govovazeket/ciagiij/hack_game_zombie_idle_defense.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/1cxjcbx/pibibipodibupedifoz.pdfIn PDF document text
    • https://xazepobuzu.weebly.com/uploads/1/3/4/5/134582826/jixurimi_mutotig_gagujenegi.pdfIn PDF document text
    • https://xekigugoraka.weebly.com/uploads/1/3/4/4/134434326/3328794.pdfIn PDF document text
    • https://midodelawipage.weebly.com/uploads/1/3/4/5/134585137/pifukem.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/10879033625.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/edgenuity_cheat_sheet_algebra_2.pdfIn PDF document text
    • https://cctraff.ru/strik?utm_term=how+to+write+a+proposal+argument+essayIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00010abd.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00010abd.bin)
    • 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_off00010abd.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABD 5292 bytes
SHA-256: c62612f33586597558496de947bf528a2e7b9eac45ea343ea9914be87f74ec40
font_01_sfnt_off00011cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBD 10836 bytes
SHA-256: 6426aabc5f3dd69edb21fe48d0b7d12f40a55cdcd9c1bcf728aaf9a99c2c2acf