Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2f9b7d48611785…

MALICIOUS

PDF

78.6 KB Created: 2021-02-27 08:02:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6432c1ea05105454fb48182e77a6a331 SHA-1: bbe8d2bffc72e24593fa39acf7682ed9b3654cca SHA-256: 9f2f9b7d486117853283e0a6ef1354e99f15c1fd43fdceb610ec218368235e9e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for a benign query, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, with the embedded URL pointing to a suspicious domain. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to a malicious site for further exploitation.

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://dugedepap.ru/strik?utm_term=what+is+the+meaning+of+social+structure PDF link annotation
    • http://shtampshop.ru/ba_first_sem_booksd62jr.pdfIn PDF document text
    • http://sefobadivura.iblogger.org/97181960759.pdfIn PDF document text
    • http://creditscoretracking.info/dojapixiwomtgmd8.pdfIn PDF document text
    • http://zotonurapad.22web.org/sketchup_models_free_download_2016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/zobifepazugafafakalebi.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/zujazerogil.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/assetto_corsa_car.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/counter_strike_2_online_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/adjective_form_of_custom.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/i._c._c._international_pcl_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/asus_ve278h_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/exerpeutic_folding_bike_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/picture_description_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/instrumental_afro_beat.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/accounting_consultant_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/lisipinimunikuxuwokisit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE652 5192 bytes
SHA-256: 9b18930b3089f33e610de4d967b395f9ba57e59146f45c3f7e9775ee0365c2e2
font_01_sfnt_off0000f7dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7DC 11492 bytes
SHA-256: 065bc47ebbefe5864ed97f14e3cca87c86780ec53450f3f37c52b00222047b82
font_02_sfnt_off00011efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EFC 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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