Malicious PDF — malware analysis report

Static analysis result for SHA-256 4deccc8d2c37441d…

MALICIOUS

PDF

76.2 KB Created: 2021-03-16 01:13:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 09809fbd210177907abe0d392d71d97f SHA-1: cd17e9605b9b1c6667f72723d12ed926a38422b6 SHA-256: 4deccc8d2c37441deb86b3f9cf8274a5e7959efd1676d827501a10e344255a24
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically linking to a site offering 'minecraft cracked apk'. Heuristics indicate this PDF is part of a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading potentially unwanted or harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/wix?keyword=minecraft+cracked+apk+1.2.8 PDF link annotation
    • http://xuzerujagojagip.scienceontheweb.net/new_sales_simplified_summary.pdfIn PDF document text
    • https://fipoxojumudex.weebly.com/uploads/1/3/4/6/134649093/8c92a6.pdfIn PDF document text
    • http://fijexojor.getenjoyment.net/pimuwevemeratomezas.pdfIn PDF document text
    • https://notaxivarem.weebly.com/uploads/1/3/4/6/134633458/degojad_vabexe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477635/normal_5fdbaabf3e5e8.pdfIn PDF document text
    • http://gomigapujasep.sportsontheweb.net/jazaniratiwozivitumetovib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450870/normal_601fac4a75f10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460045/normal_5fc64158c0280.pdfIn PDF document text
    • https://bibomezu.weebly.com/uploads/1/3/2/7/132710601/lerubuv_butofuzoju_nejuvetoda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424689/normal_5ffd88648fc24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416510/normal_5fe30317c29ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374851/normal_5fd5f5b4a61cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424328/normal_6018e6e2d39ec.pdfIn PDF document text
    • http://worozoxiw.sportsontheweb.net/federal_rules_of_civil_procedure_26_proportionality.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pipaneku/24538888407.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/esl_despite_in_spite_of_although_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/latest_android_version_nexus_10.pdfIn PDF document text
    • http://pedijuwugeta.rf.gd/maibec_installation_guide.pdfIn PDF document text
    • http://givudejefavapa.rf.gd/lovawajekogedadanaf.pdfIn PDF document text
    • http://jonaxuso.rf.gd/zetaruzunofamovosako.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/gamigipuwojila.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/60815840189.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_off0000e630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE630 5416 bytes
SHA-256: c23624fd04e6225ef4d088a468b546ece094ecae3ed8bc93eeff58d6946a3159
font_01_sfnt_off0000f8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C6 12892 bytes
SHA-256: 701a1637738c3b8f4a450469d0544b5c40a0883b61a99fd0d0b5309aaab911ab

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