Malicious PDF — malware analysis report

Static analysis result for SHA-256 8108e8b4fcfd0964…

MALICIOUS

PDF

71.6 KB Created: 2021-03-05 10:55:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 3a1ef8a4e31055f5d0aec46ae05c474e SHA-1: 3a784d9df7388cfe626c2a41ebf22a30a79fc1b5 SHA-256: 8108e8b4fcfd096436aa0b24146f634cc580fc5e69a55080dbc06c0096a68f7a
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO poisoning attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs and the document's apparent purpose of redirecting users to external sites are key indicators of this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/award?keyword=v+for+vendetta+mask+buy PDF link annotation
    • http://siondez.ru/alamo_colleges_pay_grade_scaled6qrv.pdfIn PDF document text
    • http://jopkapopka.online/3547444476196w2h.pdfIn PDF document text
    • http://vedice.ru/10th_std_half_yearly_answer_key_2018mx00w.pdfIn PDF document text
    • https://dadurafiwazozu.weebly.com/uploads/1/3/4/7/134768329/xalosebaxesasinufex.pdfIn PDF document text
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/82e5caa99b6750.pdfIn PDF document text
    • http://tenipimutav.mywebcommunity.org/raguk.pdfIn PDF document text
    • http://vurovolapoza.mygamesonline.org/vevebezipisekifagiwen.pdfIn PDF document text
    • http://qqkaxes.xyz/junojofabewanunidavesuxojr0a.pdfIn PDF document text
    • https://wovipoxutoluku.weebly.com/uploads/1/3/1/3/131383624/jamadoboriv.pdfIn PDF document text
    • http://discount50.pro/7131089675ymugd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tomenederixi.epizy.com/lspdfr_callout_manager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2892f755-e8d3-482e-9226-6cf46e71cb0b/sajokazenulojulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56085f8f-f33f-40d9-9864-7e05b76689e7/how_to_put_bowl_in_kitchenaid_mixer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9430b2a-409d-45e4-892a-d36ea61d1235/74268809202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aa2e0a9-440c-4683-b93b-4ad2f090a795/petsafe_pif_300_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2578df03-0d05-4f5f-b577-926308370a5c/what_is_the_work_of_medical_laboratory_science.pdfIn PDF document text
    • http://jufesibujubaji.rf.gd/nituralaxasexaru.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_off0000dbac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAC 5352 bytes
SHA-256: b5eaffe4214368062b6c06cebf3e65d9f562fdb680af6822c5656a0656736457
font_01_sfnt_off0000ede0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE0 10588 bytes
SHA-256: 8667edf48e33a2030e191d69a03058e7e79dbe7bb076f625cdc2fd363d8d5f5b

Open this report in the interactive analyzer, or submit your own file for analysis.