Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e46664eb4544e41…

MALICIOUS

PDF

78.8 KB Created: 2021-03-28 20:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4e3793fc039e3ff8f797c885d029a690 SHA-1: 937f73ca87a483f3c7b5eead9d8e7efde7654bdb SHA-256: 4e46664eb4544e41a39c27efe567d7f81f99ba2a7cdd06c0de24504149dcfca4
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a link farm with numerous external links to PDFs hosted on disposable domains. The primary heuristic indicates a mass external PDF link farm, suggesting the document's purpose is to redirect users to potentially malicious content or for SEO manipulation. No scripts were extracted, and the document body was heavily truncated and unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://botokaw.ru/wix?keyword=words+that+start+with+c PDF link annotation
    • http://zokidinodajives.getenjoyment.net/suzawag.pdfIn PDF document text
    • https://dawanuma.weebly.com/uploads/1/3/4/3/134305997/nebesupez.pdfIn PDF document text
    • http://xelamoxadavas.mywebcommunity.org/88404087105.pdfIn PDF document text
    • https://dubebonu.weebly.com/uploads/1/3/0/8/130874554/2c77e1c1.pdfIn PDF document text
    • https://tarutugiwom.weebly.com/uploads/1/3/5/3/135326066/jimaki.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/LgdhayB/text_twist_word_games.pdfIn PDF document text
    • https://labomozojaxige.weebly.com/uploads/1/3/0/7/130738499/kenoxibumojoxus_xewut_vavepufevafi_lewavujokabe.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/Jsiacjd/the_trial_of_the_chicago_7_review_variety.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/8Rhhfhd/jelofavexafobenax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5457524e-bace-410a-9ce7-c8d8bc0eedea.filesusr.com/ugd/f0ffd0_7deb8fc850e24189adab5166bc114f14.pdf?index=trueIn PDF document text
    • http://jokosen.atwebpages.com/gazunaxesujasuwivipinud.pdfIn PDF document text
    • http://sifebitufol.onlinewebshop.net/byju_s_ias_current_affairs.pdfIn PDF document text
    • http://bevivex.rf.gd/numipewuvajaponosomadof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae6626ec-bc9b-4c70-9c2c-ed2d5cc0b289/dizirotugufozozazexoremax.pdfIn PDF document text
    • https://d872ce2a-2baf-4032-ab86-ab75b2f66d52.filesusr.com/ugd/338562_c9bd4e89a0aa49bc893b7731f3289896.pdf?index=trueIn PDF document text
    • http://konazosite.epizy.com/matogerati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/988de3b0-178e-4994-a442-7b8008b0e252/gezixevefijekamex.pdfIn PDF document text
    • https://c83cbd6e-a134-4b49-ba12-49f24c654ad9.filesusr.com/ugd/904a8b_ce328a1d8784467eb0a8bd9ce8eabfbb.pdf?index=trueIn PDF document text
    • https://21d44941-995c-48b9-956b-8145330e20d5.filesusr.com/ugd/577b75_1afc4a0e2e964d30939858452df968f3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ed0db0c-28b2-454a-b706-7620d80329fb/bram_stokers_dracula_full_movie_download_mp4.pdfIn PDF document text
    • https://804b95bc-9ca4-448d-a094-5a8e1ff69a26.filesusr.com/ugd/99d1da_25f8b3f7e80d47628db296560224a896.pdf?index=trueIn PDF document text
    • http://xowulibi.rf.gd/accu-chek_compact_plus_meter_manual.pdfIn PDF document text
    • http://kupobazixivev.rf.gd/kejiwujudaxijebopakuwit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7011e606-a5e2-4e22-8b9c-cdc202f2c6b6/best_anatomy_textbook_for_medical_school.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_off0000f630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF630 5100 bytes
SHA-256: ab1d503a29e93a48b0f2cbb71863aba04270a46f12d447c0334410f6f7a554bf
font_01_sfnt_off00010798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10798 10680 bytes
SHA-256: f12710027c761bc978fb7a2c27bd1e60769bc37f7d5ea9c40b6aec4e90db6fb1