Malicious PDF — malware analysis report

Static analysis result for SHA-256 8630f7a676b4b5fd…

MALICIOUS

PDF

74.4 KB Created: 2021-02-21 15:09:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ad48e91990887d3733345b9dda10f09a SHA-1: 7e8cf3468451de5a345dc87f5fb8d38fe65833da SHA-256: 8630f7a676b4b5fd6264097422da08b0f504970b1fa2e9be3a0468f2208a8eb5
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or tech-support scam pattern, further supported by the embedded URL pointing to a keyword-searched DMV appointment page. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://druttle.ru/wix?keyword=pasco+county+dmv+road+test+appointment PDF link annotation
    • http://activa-fb.com/ashampoo_photo_commander_15_handbuchu75ni.pdfIn PDF document text
    • http://reduslim-shopufficiale.site/587190543076lo1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417523/normal_600373098a0a5.pdfIn PDF document text
    • http://evromotors.net/washington_department_of_licensing_report_of_salefr1pp.pdfIn PDF document text
    • https://cdn.sqhk.co/dedejosewor/cDEifHd/fitbit_watch_amazon_prime.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500438/normal_5ff5829ae96a3.pdfIn PDF document text
    • http://fruits-summer.fun/voodoo_doll_live_wallpaper_iphone_xx94kh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449783/normal_6029e436b947f.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/sasufufa/healthy_food_guide_uk_kebabs.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/bbc_uk_programme_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/xejivufipajetiwemisu.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/4376776896.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/93202969644.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/bloodstained_ps4_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/desert_lizards_osrs_slayer_guide.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_off0000e6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A0 5348 bytes
SHA-256: 59bcb9ae4ca12f49747e88e8e7cdd6d6e434ab9dbb4f294b48fddd4915adb294
font_01_sfnt_off0000f8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C8 10368 bytes
SHA-256: e5f2799897cc32337d8ecd5f193040207c9ef88717b5a58af533fc5fad45474e

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