Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf58da415a0cfc4…

MALICIOUS

PDF

67.0 KB Created: 2021-03-31 15:35:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5bd879638f8db43c5821a949a233eb0c SHA-1: bc460a0440634a0331490ff414d060bff30438a9 SHA-256: 3cf58da415a0cfc48a23a0f6fafeb3bf3bb4c71cc77855b209504fc064a455fa
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with a primary one pointing to a suspicious domain that appears to be a lure for a technical document. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xezojetit.ru/award?keyword=aashto+lrfd+2020+espa%25C3%25B1ol+pdf PDF link annotation
    • https://s3.amazonaws.com/bepukuba/diagrama_de_fases_del_acero_1045.pdfIn PDF document text
    • https://tixaradizu.weebly.com/uploads/1/3/4/6/134652762/fivumatirafudujalez.pdfIn PDF document text
    • http://help-igcopyright.xyz/3__slots_slots_slotsp4pjz.pdfIn PDF document text
    • https://lifusapemar.weebly.com/uploads/1/3/4/5/134526201/5111b.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/fefevowilibujerirubis.pdfIn PDF document text
    • http://metinozub.iblogger.org/87081754023.pdfIn PDF document text
    • http://wirelessinfo.ru/15958287259rxkc.pdfIn PDF document text
    • http://naturagrush.space/399508586718zzxe.pdfIn PDF document text
    • http://ipoteka.net/learn_calligraphy_free_worksheetsm9724.pdfIn PDF document text
    • https://mizovitima.weebly.com/uploads/1/3/4/2/134266674/dawuliruvux.pdfIn PDF document text
    • https://dililoperajat.weebly.com/uploads/1/3/4/6/134631443/69e84995.pdfIn PDF document text
    • https://radamokugek.weebly.com/uploads/1/3/2/6/132696621/wunukatigebuwewerate.pdfIn PDF document text
    • http://pitushok.fun/nusosavofatarifativijofesxtt6p.pdfIn PDF document text
    • http://zdorovienashevse.xyz/telecharger_music_gratuitement_mp33gugk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nizamazibenu.rf.gd/how_to_fix_my_water_dispenser.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80e2595b-5ae7-4cdb-9f61-275faca667a6/the_one_thing_gary_keller_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be81d9d-d229-4ee0-8dd4-6d655c375e61/fapojarivarawabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03871ed8-abdc-4d01-a68f-635cd7e5e05e/quiz_logo_game_answers_level_36.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4F6 5604 bytes
SHA-256: 5f0c539b31d4cd2742086bc0e212e80445e15783e7bc344138ab1e94c66dec70
font_01_sfnt_off0000d7ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BA 11296 bytes
SHA-256: 11fcdf1ff679d59f495af46d74f467340c0a40d76b6626e6c5c0fff392017db9

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