Malicious PDF — malware analysis report

Static analysis result for SHA-256 4787481fe4f2a039…

MALICIOUS

PDF

68.0 KB Created: 2020-12-05 19:44:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 8f35c2fd34193f57f66e75881f57e0f9 SHA-1: 3b1f2676b29f228690085d09cb0bf3c4556a3e66 SHA-256: 4787481fe4f2a0393e035e31e528de037d3bd56b042adf40a6449cd8cee641f5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?utm_term=slopes+of+parallel+and+perpendicular+lines+independent+practice+worksheet+answers PDF link annotation
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/potize.pdfIn PDF document text
    • https://jijidiwudop.weebly.com/uploads/1/3/4/4/134481930/9234119.pdfIn PDF document text
    • https://safasisi.weebly.com/uploads/1/3/4/4/134472516/zuvaruraladi-xeziredomajage-kibufoxusi-vifovimimovomem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384301/normal_5faac63694556.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377381/normal_5f8e79540d840.pdfIn PDF document text
    • https://wipiduwofudozi.weebly.com/uploads/1/3/4/5/134588456/7128360.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/gurupixabogivaz/hip_hop_dance_music_video.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/gantt_project_chart_excel_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b4cbb48-c5b5-49aa-8317-fad32c0b704d/54419797816.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/vixifalato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7878635-415a-45cf-8af6-b69c014fab05/yaaradi_nee_mohini_serial_actress_real_name.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/788c9881-aada-419d-8f8c-07ddd1dad69f/watch_fifty_shades_freed_online_free_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/79563886179.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_off0000cb93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB93 5500 bytes
SHA-256: 4919d231390af9ff13dbede322e5e96c43bc452df03e0af7ad7ec7cd8d30cb20
font_01_sfnt_off0000de58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE58 10560 bytes
SHA-256: aee8fd074b5f1efdbe8ab348adbf7606db2565c122a9150288430f2b449d94b0