Malicious PDF — malware analysis report

Static analysis result for SHA-256 af025952d66d93da…

MALICIOUS

PDF

78.7 KB Created: 2021-01-21 13:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 818eb444434c23e1a1fa4fd8ebb5ec32 SHA-1: 105781144a97538f25f0b4ccdc1dec75fa8708e2 SHA-256: af025952d66d93da76585e5916a8e0da672e665001d3aaca4bb9e54e229344cb
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The document body, though heavily obfuscated, suggests a lure related to 'Warriors in pink bandana', potentially a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://maypoin.ru/123?utm_term=warriors+in+pink+bandana PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449000/normal_5feba0afcea3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370078/normal_5f8d39ab7d53e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375504/normal_5f9c9c0659144.pdfIn PDF document text
    • https://site-1246006.mozfiles.com/files/1246006/c_form_verification_assam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373782/normal_5f8eb4ab27c00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424007/normal_5ffd127a9b1db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5fb6038fbd2ef.pdfIn PDF document text
    • https://cdn.sqhk.co/mapelimujeku/icOifjc/sushi_ninja_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405946/normal_5fcacdc078681.pdfIn PDF document text
    • https://cdn.sqhk.co/wedegetuso/gAg5ibG/colorshift_pearl_white.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
    • http://tokipobobanokab.rf.gd/94581511173.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/sotivuroroturemusu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E3 4728 bytes
SHA-256: 93189f501834c25a80fa94f65557bbfd3ae173dac610162b8dabf46c311df82c
font_01_sfnt_off0000d9e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E7 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000e275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE275 11688 bytes
SHA-256: d17144775d23df564795cf83527de83856dbba0d04958877a8cbe4006389b2f5
font_03_sfnt_off000109b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B0 16376 bytes
SHA-256: f267a97a42ed964490c0c36cf8d24d30f5cfc386ee24850e75bb3a4991f11828
font_04_sfnt_off00011f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F58 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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