Malicious PDF — malware analysis report

Static analysis result for SHA-256 920e868cf5515d65…

MALICIOUS

PDF

69.6 KB Created: 2020-12-08 03:10:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f2d8ca3d641357220ea39a9996787c9c SHA-1: b93e0087c1fc5ee26fa596f1a9015a3c7d30ab14 SHA-256: 920e868cf5515d65b34ce3c420aff57b9f43dddd0776d74a8a27cadf0317c51a
96 Risk Score

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 a suspicious domain, likely intended to lure the user to a phishing site. No scripts were extracted, but the presence of the malicious URL is a strong indicator of a phishing attack.

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://trafffe.ru/strik?utm_term=the+duty+of+the+hour+cartoon+analysis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473632/normal_5fc01a1b8de55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419630/normal_5f99895c6e658.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4edd506-277a-4dd5-bf6f-1cce60956a9f/37466292192.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/candy_that_starts_with_t.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/little_mermaid_coloring_sheets_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eda3ec917750a3d80aaa/t/5fcea92a788d7c4f39b81f76/1607379243023/truck_driver_cargo_games_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc657d6bdb33045eee7419e/t/5fc751e9bfb90028be4f56a8/1606898153928/derailed_commodity_brazilton_ks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b14fb05-3922-404c-9262-79671e4fa322/genakepejojujak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1a01c0f-8c52-4916-a732-02bfd892acc3/kiwakovukodusidopuk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11f477848ba205d19dcca/t/5fcbfef4a87f9f1b19c3de5b/1607204596628/space_shooter_cheats_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/anonytun_premium_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8446a55-3128-4519-a3cc-dc013f909888/pividewelotere.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/investigative_report_format_example.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_off0000d476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD476 5160 bytes
SHA-256: 39ad9b41bbae6fedff6d42e848d5fba92db964d4240adcb85a42f7e187ea20b3
font_01_sfnt_off0000e606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE606 10344 bytes
SHA-256: 94d2d6a4cc1b1db4bc0523888f848d762e38d92f1041c0a0018271b603183e74

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