Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b7dfee75b6285f…

MALICIOUS

PDF

75.6 KB Created: 2021-03-20 17:37:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a8eb1f18e4f4d7ad3c6636e647c1f0b3 SHA-1: d4dbc30b70051cbd788b13c6621dd532c2c9dae3 SHA-256: d2b7dfee75b6285f43b5e840c0c45325955bc827d158ff20df7cd467b08a8245
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • 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=parallel+lines+worksheet+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446380/normal_6030447a5c6f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403938/normal_5fca2deec9100.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417213/normal_604ca2ebc80a0.pdfIn PDF document text
    • http://nnorm-id.com/33371677351i3kut.pdfIn PDF document text
    • https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/6166958.pdfIn PDF document text
    • https://setejurisu.weebly.com/uploads/1/3/2/7/132740540/xisudomu_fagokesubilow.pdfIn PDF document text
    • https://tedagenuv.weebly.com/uploads/1/3/2/6/132682668/wofas-gusoxibot-buzusanenose-lekepepu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393898/normal_604de1f89ef4e.pdfIn PDF document text
    • https://jizexukufi.weebly.com/uploads/1/3/4/1/134109318/1651743.pdfIn PDF document text
    • http://casser.xyz/pentair_minimax_nt_owners_manualeqc35.pdfIn PDF document text
    • http://uose.xyz/continuidad_de_los_parques_analisis_personajesin7l0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386829/normal_5ff484de5b1aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374980/normal_5fe856afd15ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446921/normal_6004b3710fbe9.pdfIn PDF document text
    • https://kaxawoxo.weebly.com/uploads/1/3/1/0/131070710/jozodediki_kiretefujibuk_fiwiwe_berazenikaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490265/normal_6055a765339f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491398/normal_6046b32d2c674.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475376/normal_5fe44fe174160.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/c68838b8-e8ad-4504-a789-5487cbd26347/what_causes_pain_in_the_crown_of_your_head.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/442df28e-657d-487a-8f3c-31522d934c2a/data_structures_and_algorithms_interview_questions_for_experienced.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/934785bf-7a51-4575-8be2-6cacb9499506/harry_potter_part_1_full_movie_in_tamil_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c98788f-a4dd-4931-9c58-741eb22586ff/wufopebabalanupo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c8303be-8c70-441d-9266-7f2a5d66b144/how_to_use_spectra_s1_plus_pump.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000deed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEED 5288 bytes
SHA-256: caa9f41479b86d70594b93c2e81382e80af0e3f2b763bf65ace6e9f5478efc48
font_01_sfnt_off0000f0ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EA 3128 bytes
SHA-256: 6d6c1314b1ddc68d0ea737f3eb9353b1b3728c862eaf918143cf1ef309c17e68
font_02_sfnt_off0000fdae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAE 10240 bytes
SHA-256: b9c2ec7dd0b02a6ceb1f1fdef6741edbfb18db9b8cc591aa82428ae5b03e1eac