Malicious PDF — malware analysis report

Static analysis result for SHA-256 63fd10fd81054975…

MALICIOUS

PDF

83.7 KB Created: 2021-01-26 05:14:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 000984f10599808a93bc12fa3dfd65ce SHA-1: 1e472ba62c1f21779bfd48201dafe844446f0817 SHA-256: 63fd10fd81054975c0e812dabdfae213b9d8d69c928c99b7c1e13aed768eb0a8
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. The embedded URL is likely intended to lead the user to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/wb?keyword=mob%20farm%20minecraft%201.%2015.%202 In PDF document text
    • http://mamimufexaliro.66ghz.com/cutting_edge_advanced_tests_with_answer_key.pdfIn PDF document text
    • http://vopibuxipem.22web.org/48040599904.pdfIn PDF document text
    • https://cdn.sqhk.co/digiwejasipu/5WPAPgc/2d_strike_mod_apk.pdfIn PDF document text
    • http://nutigunejome.22web.org/galonijinijopafovulenu.pdfIn PDF document text
    • https://cdn.sqhk.co/fegukajebaj/fYm32IP/31746178808.pdfIn PDF document text
    • https://cdn.sqhk.co/jujadiziga/giS3cjb/fobofeviw.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/OhcqjdZ/menumalegakiwi.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/ghenhc5/jojo_siwa_live_to_dance_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/Qhajhhc/black_boy_twist_hairstyles.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/mipeboro/fobofiwefirarufof.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/piteninomotavefajuvuzaden.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/kesevep.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/68438585713.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/betrayal_philippines_series_song.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/movimiento_rectilineo_uniforme_acelerado_ejemplos_vida_cotidiana.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/information_asymmetry_oxford_dictionary.pdfIn PDF document text
    • http://wekiwuja.rf.gd/nufukuzitotovoronoku.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/landis_gyr_e110_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/ninexexifizusuvu.pdfIn PDF document text
    • http://veduredetud.epizy.com/atmega32a_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/geographical_information_system_officer_salary.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_off00010adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADC 5304 bytes
SHA-256: 6d62d45e2eda0e260a4d75ab8b6c161d2d7a6eb84fab751d9c70c48136d7baf0
font_01_sfnt_off00011cf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF5 10716 bytes
SHA-256: 8c1c7c9f0e331eb91f27c7813101d6e45774ac021bfb50b1e67ebc5d0c99c13c

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