Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ff01465190cc2a…

MALICIOUS

PDF

223.4 KB Created: 2021-07-14 00:37:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: ae8b2a9228b6e6a7172b94f54398fe07 SHA-1: bce3e4fb9aaf492f7e6041aa4ee7c5f0558e3773 SHA-256: 84ff01465190cc2ab47cb73bda447251e0e81beb92d2c21f1415a1c2530cb95f
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document identified by ClamAV as Pdf.Phishing.Trojan. It contains an embedded external URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The PDF structure itself does not contain readable text, but the presence of the external URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0116

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://queure.ru/square?utm_term=studies+in+early+hadith+literature PDF link annotation
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e94e076e267257943c3320/1625902599683/4255691247.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0002e9e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E9E5 32836 bytes
SHA-256: 7adca9aa2d15cf319b83a7c1b96f15ea67c26d9ab0ce9fc111a599e9e85aea34
font_00_sfnt_off0002b9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9F8 10512 bytes
SHA-256: 509b2b4298e6542211c5d5ebc4bc849afa01c393920f2526909e9f158c0f45fc
font_01_sfnt_off0002d1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00032602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32602 31496 bytes
SHA-256: 0b10eb8c7ac021bd9eaad8fc0ed7f8d309b8a820456de7db9b25fc436c72a076

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