Malicious PDF — malware analysis report

Static analysis result for SHA-256 0582adc700aabfdb…

MALICIOUS

PDF

79.7 KB Created: 2021-03-14 15:31:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 7f7f8cbb9d04fe6070619c411dab97bf SHA-1: b0f4e5d00f57577e34a06c16f7f615fc3280dffe SHA-256: 0582adc700aabfdbd21d02f9261e88097fc153ae55db16058ce2f83efa7d565b
134 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs pointing to disposable hosting sites, suggesting a link farm designed to distribute malicious content or phish for information. The presence of a "download button" heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=fortnite+no+verification+apk+download PDF link annotation
    • https://xuzuvakewose.weebly.com/uploads/1/3/1/6/131637797/pipaw.pdfIn PDF document text
    • https://kekisuganuzab.weebly.com/uploads/1/3/4/7/134721312/fifem_zabujarerebef.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/UoiaFZa/67247044023.pdfIn PDF document text
    • https://cdn.sqhk.co/dufadafakuti/jaghXib/ballooning_brain_aneurysm.pdfIn PDF document text
    • http://uablog.site/504703773782ua35.pdfIn PDF document text
    • https://mologikonazo.weebly.com/uploads/1/3/4/7/134706863/daxuzedovikutux-posokedateza-pogibus-xidew.pdfIn PDF document text
    • http://tiktokhd.design/917871293141zjj4.pdfIn PDF document text
    • https://dawifibikinofi.weebly.com/uploads/1/3/4/6/134682228/2208660.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwopazeg/ggcgchg/59557660337.pdfIn PDF document text
    • http://xufubub.iblogger.org/avira_with_crack.pdfIn PDF document text
    • http://avto-document.site/international_dt466e_injector_replacementhxla0.pdfIn PDF document text
    • http://tiktokfrance.fun/bexley_grammar_sixth_form_entry_requirementsl8iav.pdfIn PDF document text
    • http://xokodiraki.22web.org/36170178631.pdfIn PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/wizatibixiduke.pdfIn PDF document text
    • http://prod-fruit.space/addzest_max950hd_manual2s4e7.pdfIn PDF document text
    • http://fragcups.com/12_times_tables_chartfk6us.pdfIn PDF document text
    • http://callipakk2.site/dino_world_jurassic_dinosaur_game_hack4cnq6.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/Dih8Nig/11833167958.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wezimixororara.rf.gd/gigun.pdfIn PDF document text
    • http://rebagada.rf.gd/honeywell_home_focuspro_6000_manual.pdfIn PDF document text
    • http://savefativiluz.epizy.com/63531333957.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_off0000f7bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BD 5144 bytes
SHA-256: 288622f1f4ee1758c5f0895367e3a0b457ffaa08be5c5dfeb952c2a5d92ce8b0
font_01_sfnt_off0001096d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096D 11328 bytes
SHA-256: de321c763b639f12b379950006e8803722b10421cd105fb42c3639d8324f6163

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