Malicious PDF — malware analysis report

Static analysis result for SHA-256 63398b9f67a84bfd…

MALICIOUS

PDF

76.0 KB Created: 2021-01-19 14:48:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 458a3ad1fc2ad7d34cc42ccc683ac8ac SHA-1: da69c1af4e99714aa54003bd88af60f6e9f23885 SHA-256: 63398b9f67a84bfdd40d74d792690de399e5ba1d9ba89b72b3dbcd02a1c207a2
116 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV specifically flagging it as Pdf.Phishing.Trojan. The presence of a callback phishing lure suggests the document is designed to trick users into contacting a fraudulent entity. While no scripts were extracted, the PDF structure and embedded URI indicate an attempt to direct the user to a malicious URL, likely to download further payloads or initiate a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/123?utm_term=travel+trac+millennium+fluid+trainer+manual
    • https://site-1168377.mozfiles.com/files/1168377/jukopiluzoxuraku.pdf
    • https://site-1179337.mozfiles.com/files/1179337/paradabegob.pdf
    • https://cdn.sqhk.co/vuwonesi/w3hhbjf/screen_recorder_for_pc_free_download_full_version.pdf
    • https://site-1168194.mozfiles.com/files/1168194/gadugakunoganonovetagos.pdf
    • https://cdn.sqhk.co/zovitamojim/igehhhj/8_ball_pool_online_play_as_guest.pdf
    • https://site-1166752.mozfiles.com/files/1166752/xuzijifobevewaxan.pdf
    • https://static.s123-cdn-static.com/uploads/4388412/normal_5fc5e5e43c358.pdf
    • https://cdn.sqhk.co/bixatavafut/agiheTB/shipwreck_museum_whitefish_point_michigan.pdf
    • https://cdn.sqhk.co/nakunadubux/igjfgjB/grim_soul_dark_fantasy_survival_apk_obb.pdf
    • https://cdn.sqhk.co/vipujitebiki/hj59ies/biriloje.pdf
    • https://cdn.sqhk.co/gebemiwisero/bLtgiKC/musipijiwotizokogo.pdf
    • https://site-1229024.mozfiles.com/files/1229024/71546992261.pdf
    • https://cdn.sqhk.co/tolebilu/9LDje18/putedudavomixofakiwu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/fuwuzerijofa/invision_website_templates.pdf
    • https://s3.amazonaws.com/gewisetug/13105691913.pdf
    • https://s3.amazonaws.com/nuxepiduded/67140656455.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c20e.bin
7fbf021a83be9a21e0ead9dbac10f868f2fca0e0bc983ee8a5774a92da7c9384		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC20E 4772 bytes
font_01_sfnt_off0000d22b.bin
ab315768dec237ae5cb46ce2edc2ee9671e8f20883323bcbfdb0aae681fa9b54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD22B 11052 bytes
font_02_sfnt_off0000f80a.bin
75da917f3507440f0170f4e49c8dd4a01e400cff286ef4fc2bbbf2f8e63e8264		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF80A 17504 bytes
font_03_sfnt_off000111ea.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111EA 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.