Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f8d0016641498a3…

MALICIOUS

PDF

82.8 KB Created: 2021-05-10 15:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb11132976e64fd74f9fe4e1df6fe1ba SHA-1: bbfbe139eea3351be769d78fc6853d9b5f5939a7 SHA-256: 5f8d0016641498a37e5bb1ee42ed2275520c39e66a0c3d11b3f38658dce529d4
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and is flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and phishing-related. The document body, though heavily obfuscated, suggests a lure related to 'how to apply for medicaid number'. The presence of numerous external URIs, many hosted on disposable domains, indicates a link farm designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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
  • 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://resalured.ru/strik?utm_term=how+to+apply+for+medicaid+number PDF link annotation
    • http://logoped-samara.ru/66530813049hqnt2.pdfIn PDF document text
    • http://probkin34.xyz/transformers_autobot_stronghold_2_hackedrou47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456686/normal_60069b52d98e3.pdfIn PDF document text
    • http://daisywobzr.rest/gibawupugepili0v55d.pdfIn PDF document text
    • http://cocobeautybar.ca/59123701975lrsax.pdfIn PDF document text
    • http://triple-doska1.club/milton_maize_maze_2020by565.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_600e05c1a9d42.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/9iigjie/hachiko_japanese_movie_trailer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_602711e36347f.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/oRge8ij/kaiju_rush_all_eggs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_604422936e91f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475741/normal_605a2290d927d.pdfIn PDF document text
    • https://cdn.sqhk.co/nepozenilu/hxiuFy2/aifmd_annex_iv_reporting.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/hdjbtje/77271966644.pdfIn PDF document text
    • http://runmasten.online/mudisuxeku40kj0.pdfIn PDF document text
    • http://svarka-aurora.online/remember_me_from_coco_sheet_musicyzn5r.pdfIn PDF document text
    • https://cdn.sqhk.co/ledivure/hf1ihmt/facebook_search_bar_missing_2020.pdfIn PDF document text
    • http://heymama.store/catalogue_ikea_maroc_2020ghlfg.pdfIn PDF document text
    • http://yazansoft.com/codecombat_answers_backwoods_forestpktgv.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/8282f21d-6318-427e-a521-18ec49e3791d/how_do_you_fix_a_motion_sensor_light.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43633fa1-f488-4997-9fd9-f71292cfa212/85801097148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa665433-9ad8-4141-ae5a-6ad4a65cbbdc/personal_narrative_essay_examples_5th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0aab056-ece2-4a64-aaf1-618476aa0a9f/jibejumobagug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82a522a1-f251-4811-b35f-01488e7cbe1f/how_much_weight_can_you_lose_on_800_calorie_diet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d42aefa-9497-414f-9c14-761ba59d0da5/dd_handbook_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21b53b0e-0c03-41fa-b7eb-6c024e2e976d/how_can_i_make_a_smoothie_without_yogurt.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_off00010679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10679 5416 bytes
SHA-256: adc4c5de89798631cd8d7e55c883ebc960b0aede94fea95f3b7a1a31b7b33755
font_01_sfnt_off000118e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E7 10796 bytes
SHA-256: 0afe26dc0a9a1fee39c5be017640c42ce3adb01dc8f998d65f0d331d38d46da2