Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4a3d63c04fd8f96…

MALICIOUS

PDF

74.7 KB Created: 2021-03-23 14:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dd28f1621f5d1ced257f5cf1abb735a3 SHA-1: e8e5f7993146634d64011b41f60e4444555a2fd5 SHA-256: f4a3d63c04fd8f96bc642e5ffdc40a26940930bc11995c3193d4b15c46a858ee
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://nipisod.ru/wix?keyword=classic+sport+air+hockey+pool+ping+pong+table', which is likely a phishing lure. The document body, though heavily obfuscated, suggests a pretext related to product information, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/wix?keyword=classic+sport+air+hockey+pool+ping+pong+table PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470542/normal_5fca009008ab0.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/oQ191w0/farmers_almanac_fishing_report_for_today.pdfIn PDF document text
    • https://cdn.sqhk.co/nulaliki/6NsAFhb/visual_studio_code_login_salesforce.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumirapeb/gcvKjgo/live_lock_screen_wallpaper_iphone_8.pdfIn PDF document text
    • https://cdn.sqhk.co/wofetewa/jijjbAG/sexafaxowuposalobam.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/s4Vhjuu/xarufesotudax.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/ifhhmhg/the_room_place_outlet_on_north_ave.pdfIn PDF document text
    • https://cdn.sqhk.co/naludibeg/haBNhgH/25924639235.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459055/normal_5fe902e9759ef.pdfIn PDF document text
    • https://cdn.sqhk.co/savaketiju/cgj30jf/tiktok_ban_update_news.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/mjc9gib/4533103593.pdfIn PDF document text
    • https://cdn.sqhk.co/wenejusuzixe/dIje6iM/talking_ginger_2_online.pdfIn PDF document text
    • https://cdn.sqhk.co/ginijetemepa/jjjabK4/29287463770.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464730/normal_5fe7e85826816.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/hegjjeY/86040594443.pdfIn PDF document text
    • https://cdn.sqhk.co/ximepadogi/IhgswG0/78205802168.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://uploads.strikinglycdn.com/files/09f8066b-d349-4cad-828c-fa4f7caea9f9/a68hm-e33_v2_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cdfacaf-84ac-4ccb-a203-996607d3910c/best_way_to_start_doing_digital_art.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/website_template_design_bootstrap.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/78500130597.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/37877230544.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_off0000d62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62B 5312 bytes
SHA-256: 8189fb6394c77d4a79eab44e46a49c6e7d46b97bb649396011866c958add8b05
font_01_sfnt_off0000e82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82E 11316 bytes
SHA-256: 78520dcd03e233a63497156ca458530999584325a0b7137b4783e6ea558a3856
font_02_sfnt_off00010ea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA9 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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