Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f126682a7c8a76…

MALICIOUS

PDF

68.6 KB Created: 2021-03-20 01:01:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 22ca1db0cc422779326cab0ac483ebbe SHA-1: 8f23a83caa775dc418ed1543b48989d3da073f47 SHA-256: 02f126682a7c8a767c13bd29e9337e446256174068cc0919e47cacf97ebe49a5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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://xajibur.ru/strik?utm_term=mathematics+for+economists+simon+blume PDF link annotation
    • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/tikufuwisaxomaze.pdfIn PDF document text
    • http://xukavegogeb.22web.org/xenulos.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/gd91Tjc/mebutukewodabixefidon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480581/normal_60163ab8d216c.pdfIn PDF document text
    • https://kuxozofaxaxasij.weebly.com/uploads/1/3/5/3/135325708/nuwaxizeb-vutejowises-gukanokozaz.pdfIn PDF document text
    • https://cdn.sqhk.co/gitesafuwu/IGhckij/modern_house_mod_for_minecraft_pe.pdfIn PDF document text
    • https://nupigefaxobabu.weebly.com/uploads/1/3/1/0/131070289/bf8fb.pdfIn PDF document text
    • https://cdn.sqhk.co/zafazegig/Tdhhidx/vepesaxedibabixi.pdfIn PDF document text
    • http://talajifit.mywebcommunity.org/huckleberry_finn_quotes_about_the_mississippi_river.pdfIn PDF document text
    • https://zuladaziduvixu.weebly.com/uploads/1/3/0/7/130740320/waluwiralalofik-vunamodikexig-nilawikemuwon-kunebelel.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxixixixi/idjaLie/mozuzolaninijabilebikela.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485821/normal_5fd336b95e699.pdfIn PDF document text
    • http://pokafujadiso.iblogger.org/personal_exercise_plan_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464722/normal_6055155182267.pdfIn PDF document text
    • https://bexopugizabon.weebly.com/uploads/1/3/4/0/134042324/vimot.pdfIn PDF document text
    • http://petajofap.22web.org/pitewepivo.pdfIn PDF document text
    • https://cdn.sqhk.co/bipozipo/jeGv6No/govujegodem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lulevewutowa.epizy.com/10945586634.pdfIn PDF document text
    • http://jitetiwax.rf.gd/78290845788.pdfIn PDF document text
    • http://lilizupe.rf.gd/is_dunkin_donuts_caramel_swirl_dairy_free.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/vegas_pro_15_tutorial.pdfIn PDF document text
    • http://tupomomi.rf.gd/strengths_and_weaknesses_questions_and_answers.pdfIn PDF document text
    • http://pusebirenox.myartsonline.com/lixezenisofibofilamuwu.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_off0000cf69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF69 5264 bytes
SHA-256: 6836218fd647ea7fd591780150fa7066c473f64821f323fcd880af27479dab96
font_01_sfnt_off0000e134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 10424 bytes
SHA-256: 0754f167b15ecd20c796e356c7f38fd46afbcab351c2bfbadc77eed028034ec9

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