Malicious PDF — malware analysis report

Static analysis result for SHA-256 76f89ef374bdd292…

MALICIOUS

PDF

83.6 KB Created: 2021-03-23 17:21:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 691a6aa08cbbaaba662680ca47b7f108 SHA-1: e02e93e178a537eb36dca0603923fff750a8ad0e SHA-256: 76f89ef374bdd292c051abc1ca21112a7b83034397eb0925d72c8c4bcb2fafa9
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links pointing to known malicious redirectors and disposable hosting, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=can+protein+be+a+meal+replacement In PDF document text
    • http://frankkyko.com/In PDF document text
    • http://bivaxosufuxibo.mygamesonline.org/49758616493.pdfIn PDF document text
    • http://operationhomeplate.com/how_to_get_xbox_codes_for_freezbi07.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/87472697001.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/dumudopubame.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/68751966104.pdfIn PDF document text
    • http://detonic-ro.website/s2d_multiplayer_iosjt03v.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/rizisorutijuneligo.pdfIn PDF document text
    • http://nerazegizetikam.getenjoyment.net/xoxakidavubago.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/29435072913.pdfIn PDF document text
    • http://ita-yog.space/wabukidafotuxgwbxu.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/iswaran_the_storyteller_question_answers.pdfIn PDF document text
    • http://dabinepoj.mygamesonline.org/steelseries_arctis_7_manual.pdfIn PDF document text
    • http://barcaporirternet-interbank-pe.com/lebuvafidibapiniflaohr.pdfIn PDF document text
    • http://wedevaz.sportsontheweb.net/blender_materials_and_textures.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://24451074-f53b-4065-993c-779ba3957988.filesusr.com/ugd/0ae25f_1842ffaa3e5d4c13b1f057348352bbfe.pdf?index=trueIn PDF document text
    • https://f733e552-90a1-4d1f-83ca-a6b36afcf31c.filesusr.com/ugd/38bf1f_bf9b295cdc084c3e91d676e75dc63878.pdf?index=trueIn PDF document text
    • https://2e8e3215-33bf-4fe1-bc67-b38dac560527.filesusr.com/ugd/269bb8_4fb12f5b057545d1a459afc1a39b415c.pdf?index=trueIn PDF document text
    • https://a5a7f18c-b887-48a0-80cc-3627c14345d5.filesusr.com/ugd/609f59_a7d6ed7bb7a94e36b26ed819c40112c6.pdf?index=trueIn PDF document text
    • https://e082b6be-64c0-45f6-a8ff-82b9c6f476f0.filesusr.com/ugd/1479de_f15c78dc2ad84561969c795b5d47111b.pdf?index=trueIn PDF document text
    • http://desujiruvomeb.myartsonline.com/5009496939.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_off0000ff25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF25 4948 bytes
SHA-256: ffcbdf48243fe52c65f6b025dc7cb9c5cf053eeddca02d7dbd2ab5d27f3871a5
font_01_sfnt_off00010fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD0 2188 bytes
SHA-256: 8243a2978354b99ad9fc1765d3878328d49e2998d0a5549394a0bdfef85e0506
font_02_sfnt_off000119ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119EF 10816 bytes
SHA-256: 88d75e5251b135b985c1f4ddc272a446bfe854ccd3fe297d6ecc8f557f47c20f