Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7bf96bf8588ac17…

MALICIOUS

PDF

105.8 KB Created: 2021-03-17 22:31:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4eb0d70167ddc449354ca3af96095c5c SHA-1: cb1add1e33a4b5f9c12ebe541eee962d4eaa5952 SHA-256: d7bf96bf8588ac17cdd145e789ca38b26524d2910aad357887890c9a3320b242
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicative of a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or SEO abuse. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/wix?keyword=farming+pro+2015+apk+indir PDF link annotation
    • http://zitupow.medianewsonline.com/angular_5_documentation_download.pdfIn PDF document text
    • http://zovolexune.sportsontheweb.net/80709837010.pdfIn PDF document text
    • http://pelabinowoguk.getenjoyment.net/brother_xl2600i_needle_position.pdfIn PDF document text
    • http://ruszaimclub.ru/boss_dr_synth_330monty.pdfIn PDF document text
    • http://everydayy.fun/matching_moon_phases_worksheet_answersi9su6.pdfIn PDF document text
    • http://lbaranaydin.com/lidotudugemofe6o1.pdfIn PDF document text
    • http://raluwixisi.22web.org/43311851012.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lozadubevapoke.epizy.com/facebook_sdk_login_android.pdfIn PDF document text
    • http://puwojewemuxa.epizy.com/bank_po_exam_question_paper_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34da7964-bf7f-4b8a-ae99-e9860d7fe185/88823437914.pdfIn PDF document text
    • http://wawopuviginase.epizy.com/34073832333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94d6c157-9e9f-4b07-af38-11197192ef66/inside_the_criminal_mind_book_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d644ec2-b148-4b4a-ba48-5ca8e7c9c00c/peganemirekevoge.pdfIn PDF document text
    • http://xukonepuwe.rf.gd/guzalovunemixod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d1d33ba-bb1c-47cb-9e4b-86485f4347fe/kafetipilup.pdfIn PDF document text
    • http://runoxujozu.rf.gd/pwm_solar_charge_controller_work_mode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b6b1fba-f7b8-4515-a6c0-c28eff3f74af/if_the_savior_stood_beside_me_david_archuleta.pdfIn PDF document text
    • http://timodetunidup.epizy.com/zobapako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/037b06b2-c37d-47ec-a55b-7a2e1b82dd79/gugupom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d868f558-c9d7-4d18-a424-73e93f0bc487/2015_kenworth_t370_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93e27b58-7260-43bf-91b1-67926a6cd650/wijivegofimofogiselipil.pdfIn PDF document text
    • http://momerizimapunu.epizy.com/votorenazun.pdfIn PDF document text
    • http://nepejalaziba.rf.gd/fl_studio_mobile_android_apk_free.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001505a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1505A 5536 bytes
SHA-256: f5558335af478e7347b9f472897860bec78edd8837d531f273ce8baee5dc7fa0
font_01_sfnt_off00016326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16326 18492 bytes
SHA-256: eb68f525808530547cc618e1d7f742b1fbba59929319cdce62d5c15dc658393f

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