Malicious PDF — malware analysis report

Static analysis result for SHA-256 e37281acfa6ee2cc…

MALICIOUS

PDF

68.3 KB Created: 2021-04-04 15:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 17132f0067af6e2d1d659d553a814dba SHA-1: e39253687f3ccc439fb38745208cb1d24125d016 SHA-256: e37281acfa6ee2ccc004d9099c78a613797d0eea3fd4961096dbed8c59457113
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that points to a URL designed to mimic a search result, likely to trick users into downloading malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to facilitate the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/wix?keyword=yupptv+apk+download+for+android+tv PDF link annotation
    • https://cdn.sqhk.co/vojofarakiva/iXhj7aQ/jerizunovokeduzibave.pdfIn PDF document text
    • https://kirorasonosa.weebly.com/uploads/1/3/4/7/134743937/52e9b1f2acffcf.pdfIn PDF document text
    • http://tanolugulutewu.medianewsonline.com/alex_rider_secret_weapon_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/mozedizupi/ejdkjeD/dads_worksheets_negative_numbers.pdfIn PDF document text
    • http://jajolamuseku.medianewsonline.com/arbeitsblatt_bruchrechnung_klasse_6.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/ChfjgDZ/zozimasijapaxup.pdfIn PDF document text
    • https://gabegolixen.weebly.com/uploads/1/3/4/3/134368455/zelediforolimunu.pdfIn PDF document text
    • https://guvopizap.weebly.com/uploads/1/3/0/7/130776702/pisujuluvi.pdfIn PDF document text
    • https://melinifijegor.weebly.com/uploads/1/3/4/2/134265386/6222552.pdfIn PDF document text
    • https://sukizasatesez.weebly.com/uploads/1/3/4/6/134686833/mitejazeguwes_sipuzuwibakix_pilura_fagilujirivam.pdfIn PDF document text
    • https://cdn.sqhk.co/bagekaketox/ghjyshj/nice_guidelines_nephrotic_syndrome_adults.pdfIn PDF document text
    • https://lekusilikeveb.weebly.com/uploads/1/3/0/7/130739001/bunisobow.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/B64WhaH/55007196662.pdfIn PDF document text
    • http://dibiwarisogix.mygamesonline.org/domuradekuxoxe.pdfIn PDF document text
    • http://ruzamaji.getenjoyment.net/el_aleph_borges_descargar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://penanaras.myartsonline.com/cambridge_igcse_history_option_b_the_20th_century_coursebook.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/bossuet_oraisons_funbres.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/sensor_tower_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/72632149462.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/email_address_pattern_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/pc_plane_games_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/64072545383.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/button_onclicklistener_in_android_studio.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_off0000cf27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF27 5032 bytes
SHA-256: c5fd37c48ab1be39b829cd9766b2998f03a01ee861a0b1bfff18234b36f97275
font_01_sfnt_off0000e074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE074 10220 bytes
SHA-256: 5f41a901feda6e532dd9a85b5c7e81831cd0a5e962034c6bdc37e1f86745504a

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