Malicious PDF — malware analysis report

Static analysis result for SHA-256 4276a2e67a1f5d74…

MALICIOUS

PDF

72.3 KB Created: 2021-03-12 10:57:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ed9b806e7f2c8292056fc17b367ee8e SHA-1: 15c0f7655c615b255e295b2d73865f4f9565af8e SHA-256: 4276a2e67a1f5d7450f9b78321011f3e7d81e9887ebabd0ffff718a4d94ff159
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a site offering 'chapters mod apk sbenny', suggesting a lure for potentially unwanted software or malware. The PDF structure itself is also suspicious, with duplicate object bodies, and the presence of embedded JavaScript further supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=chapters+mod+apk+sbenny
    • https://cdn.sqhk.co/sevijeruba/heieglP/11077716764.pdf
    • https://cdn.sqhk.co/fezifoxunif/N0ijhaz/cyber_crime_law_notes.pdf
    • http://fexevewuli.mypressonline.com/9377549494.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sefiwegegagu/rugivufixon.pdf
    • https://s3.amazonaws.com/jajoxulabojaso/wupoladuj.pdf
    • https://s3.amazonaws.com/zedudo/kundali_software_for_pc_free.pdf
    • https://uploads.strikinglycdn.com/files/909b4289-ee3c-4fab-9d47-a46550ba96e8/harbor_breeze_saratoga_owners_manual.pdf
    • https://s3.amazonaws.com/migivewuwe/76637331176.pdf
    • https://s3.amazonaws.com/xilasisefi/the_spectacular_now_full_movie_download_with_english_subtitles.pdf
    • https://uploads.strikinglycdn.com/files/c42ba5fa-3065-4e02-a7ae-3555c14882ee/wirimekedoxuzat.pdf
    • http://madepadejatutof.onlinewebshop.net/xosilimola.pdf
    • https://s3.amazonaws.com/silubebebefuju/xaxulakodefapagimuduz.pdf
    • https://s3.amazonaws.com/fedojigudaj/83927267794.pdf
    • https://s3.amazonaws.com/datarofapakil/uniformed_services_definition.pdf
    • https://s3.amazonaws.com/gofilafixu/pozokijatoxufijopisabura.pdf
    • http://jonesojawu.myartsonline.com/grecia_antica.pdf
    • https://uploads.strikinglycdn.com/files/5ac0ce54-ca23-4a89-885e-4bd62df9e6f3/nalaja.pdf
    • https://s3.amazonaws.com/degisapemifa/branding_guidelines_typography.pdf
    • https://s3.amazonaws.com/wujafivabipo/10819982679.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df2a.bin
17b51e65d25c470550eca2a23f5e9bd3a8e464304ee4cbc5567cf507b640ce65
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2A 5376 bytes
font_01_sfnt_off0000f141.bin
a716ffedaea8546d26fba6076071f9bad049ef354a0e2970f5736c4b9ffbcd70
pdf-font-stream PDF embedded font (sfnt) at offset 0xF141 10016 bytes