Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fab45c7da88a30e…

MALICIOUS

PDF

77.5 KB Created: 2021-03-15 21:33:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 4b63f7c1dc7dcfedf8613dd593096c03 SHA-1: 02cf1bc76b8e51d478ac4bab5e082b1910287fc6 SHA-256: 5fab45c7da88a30e3e96353a98a9916c1b6decebcf40705b7261d88dd3c381db
224 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ML classifier and ClamAV detection. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, with the primary suspicious URL being https://soxebez.ru/wix?keyword=angeletta+skin+cream+customer+service. The presence of urgency and password-protected archive lures suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 8

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=angeletta+skin+cream+customer+service PDF link annotation
    • http://rakapugijumub.sportsontheweb.net/simawivef.pdfIn PDF document text
    • http://parhelifrl.space/calories_in_taco_bell_chicken_soft_tacodw5i5.pdfIn PDF document text
    • http://istlan.space/412372765116s1sx.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/warebaxojesoxib.pdfIn PDF document text
    • http://leduxebawini.22web.org/20439854858.pdfIn PDF document text
    • http://giocodigital.website/a_twist_of_the_wrist_1iyr0i.pdfIn PDF document text
    • http://nebofonuve.mywebcommunity.org/wojeramulokija.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/jemozogevenxsh0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://51fd5013-30c4-43d1-89ce-86564632a3b5.filesusr.com/ugd/9f06f8_e44ae55dec544d518bdc1da2f714ffcb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/apc_back-ups_es_350_alarm_silence.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/finudebik.pdfIn PDF document text
    • http://bikemeno.rf.gd/gekajemixum.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/texas_high_school_4_year_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/71296219757.pdfIn PDF document text
    • http://jarewixefokoxem.epizy.com/chocolatier_decadence_by_design_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/fallout_4_companion_guide_nick_valentine.pdfIn PDF document text
    • http://soxuxemakim.rf.gd/doxapebovipizow.pdfIn PDF document text
    • https://b064d0e4-88d6-4b7e-8087-8ebf790fcba6.filesusr.com/ugd/ca32a8_fd70a8ad7be24e158733f8ee1617df11.pdf?index=trueIn PDF document text
    • http://gumikibe.rf.gd/50714122797.pdfIn PDF document text
    • https://a0e9597c-cfbb-4fc1-b0e0-47ed6411b148.filesusr.com/ugd/24269e_0d6afa2ce9ee4ad8a1ff67ebacf3486c.pdf?index=trueIn PDF document text
    • http://wofavum.myartsonline.com/33986542132.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/tifivagozexolezo.pdfIn PDF document text
    • https://13fad4bf-7224-44b3-802b-16842e97d241.filesusr.com/ugd/b14664_4786fe80e282443188fb4a97aa6e7332.pdf?index=trueIn 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_off0000f02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02C 5232 bytes
SHA-256: 5996284aca62c581c0e6b257aee703f9c701fb16a270341d1baa01ddc6e32748
font_01_sfnt_off000101f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F1 11300 bytes
SHA-256: e18247f34a9509fd3ef612ef5e8d163ff66f7fe0fc23ea24574af6f48ebf1840

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