Malicious PDF — malware analysis report

Static analysis result for SHA-256 e28c2cb36dfd0b2e…

MALICIOUS

PDF

188.9 KB Created: 2021-01-08 19:45:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5ec66d4277e4395ac1aee34de9395b75 SHA-1: d2a1bcd0f83015b40e70d6cb72b993e3cf9b2c36 SHA-256: e28c2cb36dfd0b2ecb53b7c5234e7e90d8b8f649ddff75ea480c00b01faba9f5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 threat. It contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to a game guide, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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://traffset.ru/123?utm_term=mario+tennis+aces+adventure+guide PDF link annotation
    • https://cdn.sqhk.co/kupemopo/U2iFjhy/xogijanivovetanejap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413228/normal_5fc7114bd4fd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382779/normal_5fa3d44fbbfbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485930/normal_5fcc1fc94223e.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/fiajaic/bojowojavorobopatova.pdfIn PDF document text
    • https://naxazutip.weebly.com/uploads/1/3/4/6/134610322/cf4a6fe22933.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380528/normal_5f8bac8c4bf3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464709/normal_5fedf5c041ddb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427077/normal_5f99f6ca64f3b.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/d1946861-d131-46a5-a0c4-5bdff712d074/lazawiwi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24DBD 22812 bytes
SHA-256: 41c0973eb7c41bc526e0a0c7080ef6f1e54f8027aa446d03cf84eebdc8c14f13
font_01_sfnt_off0002968a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2968A 5140 bytes
SHA-256: 2b76f030abff6a95b13efe0eaefaccef87c99720d36a570bfc198561ba1394d3
font_02_sfnt_off0002a827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A827 12324 bytes
SHA-256: c3ec830116c2b61c9672fd3983b9ea4b4dd50af9932023a06bf9f903ebf120b2
font_03_sfnt_off0002d042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D042 16132 bytes
SHA-256: 895f66822cee8096b629ba52ebdbe333aa959cf625638ac8af8884b25f69792f

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