Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa87d86412d895aa…

MALICIOUS

PDF

65.7 KB Created: 2021-03-30 22:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 12eac3aa79908a9824b62cff4c3e6376 SHA-1: e46b47c569b25465d4060c52347099f2baf320dc SHA-256: aa87d86412d895aa679575dca7dce36a80aeeb80dcc9697b52ddfe171dbee6fc
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=crib+sheet+meaning+school PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378855/normal_60338f942ebb0.pdfIn PDF document text
    • http://justamorem.com/212771668968rcdu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410717/normal_603b2a658f105.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/gif0gcO/99798375864.pdfIn PDF document text
    • http://susurrus.space/452115250320ls0y.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/aDgcB53/7_minute_workout_video_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nokodexuxof/hdWoZgg/72072110902.pdfIn PDF document text
    • https://cdn.sqhk.co/zesojesiwi/d9gcgvv/bike_racing_game_download_apk_10_mb.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/U2zeIhg/meeting_guidelines_in_project_management.pdfIn PDF document text
    • https://cdn.sqhk.co/jevikepuja/p11bFhd/spiral_notebook_making_supplies.pdfIn PDF document text
    • https://cdn.sqhk.co/xajevedu/g9AvicE/train_simulator_2019_keyboard_controls.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469860/normal_60605872d3b9e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/779ade20-d88a-4e74-9a62-216550c4778a/1996_club_car_ds_parts_list.pdfIn PDF document text
    • http://mamuzov.rf.gd/87487853312.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db8588f4-0885-49cf-aa33-d1e2db184f3f/zuvuvareteta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74a36f07-eddd-445d-9cef-7895ea63fb3e/vivitar_ising_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccf02030-8536-404f-a45f-89b1b29b6c77/2015_ford_explorer_brake_pad_replacement_cost.pdfIn PDF document text
    • http://zodejudefafu.epizy.com/austeridade_dicionario_informal.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_off0000c5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5BC 5260 bytes
SHA-256: 9db7ed3052d57f5f62673cdf6f34e71226e32fe57e85eb7e8c11f8d89fe97582
font_01_sfnt_off0000d76c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76C 10084 bytes
SHA-256: 79a0aacec23f3309016892c5ee5a945209f05cad4756985dcf89ce0daad5b905