Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6308155a3f150f0…

MALICIOUS

PDF

75.2 KB Created: 2021-03-03 23:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: f9eb83c841e4c0a0163df377a3b3f3fc SHA-1: fa218a5f46fd3c47121b6247a04c8cb67aed1766 SHA-256: c6308155a3f150f0584f838e8793c97b9ad9109319231fb8216cea17796a9af1
156 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. The PDF contains a large number of external links, suggesting it is part of an SEO link farm or a phishing campaign. The document body, though heavily obfuscated, contains text related to 'Quran english translation for sale', which is likely a lure. No scripts were extracted, but the presence of numerous external URLs points towards a phishing or malicious content distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/123?utm_term=quran+english+translation+for+sale PDF link annotation
    • https://cdn.sqhk.co/bimonabozo/juSJVyT/11895175028.pdfIn PDF document text
    • http://bodyita.space/manual_de_diseo_de_obras_civiles_cfe_hidraulica29mp8.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/s1gj1gg/newufetukejowizarirek.pdfIn PDF document text
    • https://vufupobuzalezu.weebly.com/uploads/1/3/4/8/134853030/c4e936.pdfIn PDF document text
    • https://bemebedutor.weebly.com/uploads/1/3/4/6/134624352/f49b31e86e.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/XtWjhg0/15118155939.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/ibig8jZ/seninamuvor.pdfIn PDF document text
    • https://cdn.sqhk.co/kebokeregim/jdheKgg/descargar_farm_invasion_usa_premium_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pekebugus/G3f0hhs/beyonce_destiny_s_child_songs_youtube.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/mubemutolewe/event_planning_website_template_wordpress.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/practical_machine_learning_with_r_and_python_third_edition_machine_learning_in_stereo.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/chemguide_electrophilic_addition.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/817286050.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/timanomirujinuvojurix.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/calender_pvc_sheet_machine.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_off0000eb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1E 5088 bytes
SHA-256: 9817d36f97e749680d2ec6e50d17b1411e8b8c6ca609190f75bb08311bb51d11
font_01_sfnt_off0000fc69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC69 10364 bytes
SHA-256: ff294f89cfd75efa723b5f447b06bde0fc9c844c2d50460ce0a414c5825a9995

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