Malicious PDF — malware analysis report

Static analysis result for SHA-256 566a11c170fff8c6…

MALICIOUS

PDF

87.6 KB Created: 2021-03-30 14:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: be13f15dd69e4aa86f51084a4247bfbf SHA-1: 037f87dbc554ba70fe14ed3bdecaa329c5975d71 SHA-256: 566a11c170fff8c613fec8933598908458eaa91e6c82cc5f497ce689848b693c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely intended to deliver a payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to academic material.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/wix?keyword=biology+semester+1+exam+review+answer+key PDF link annotation
    • https://nabezaxe.weebly.com/uploads/1/3/4/8/134852032/3084015.pdfIn PDF document text
    • http://clientesdkb.com/what_are_the_5_survival_needs_of_the_human_bodytx0c8.pdfIn PDF document text
    • http://fdvsefwfrw.space/fadodexufarafe80osy.pdfIn PDF document text
    • http://lbaranaydin.com/why_does_my_epson_printer_not_scan_to_my_computerhqppf.pdfIn PDF document text
    • https://xaxepilote.weebly.com/uploads/1/3/4/2/134265473/8153820.pdfIn PDF document text
    • http://leree6.club/duwobujuxavatarubunisd1lt.pdfIn PDF document text
    • https://kazajibabagak.weebly.com/uploads/1/3/4/4/134467412/palatilaleburimanino.pdfIn PDF document text
    • http://urologo.store/88933408694tp62g.pdfIn PDF document text
    • https://nipujari.weebly.com/uploads/1/3/1/3/131384055/225125.pdfIn PDF document text
    • http://dabuzasomadote.22web.org/nogomi.pdfIn PDF document text
    • http://onkoprofi.ru/60333965555z0u4v.pdfIn PDF document text
    • https://pilonalamajavex.weebly.com/uploads/1/3/1/1/131164122/wapedaminar.pdfIn PDF document text
    • http://samitap.iblogger.org/xovibusatafepas.pdfIn PDF document text
    • http://leqqurint.online/does_beet_juice_help_with_high_blood_pressureh2qc3.pdfIn PDF document text
    • http://onatural.space/cheap_monthly_contacts_for_astigmatism518bt.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/makixibawumebol/gijevapofonidos.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/66326433326.pdfIn PDF document text
    • http://kamizawub.epizy.com/ielts_speaking_part_1_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/foratobafaw.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/63836339489.pdfIn PDF document text
    • http://resegubus.rf.gd/thule_roof_rack_installation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/witcher_2_netflix_jason_momoa.pdfIn PDF document text
    • http://gixunov.rf.gd/92040322882.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_off00011723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11723 5492 bytes
SHA-256: ff0d8c830297f8686fbfbc0356a7d5f3f121d1e7dd9d9d6458908a1f166aa631
font_01_sfnt_off000129e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E6 11484 bytes
SHA-256: 88d3ae95fce4a709dd2171aaaf64dbb2636e24fb2b9e9b7d23c4b81dda65a7fa

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