Malicious PDF — malware analysis report

Static analysis result for SHA-256 921f00582836ac2f…

MALICIOUS

PDF

293.6 KB Created: 2020-11-11 02:51:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 20eccba3dbd317b78ef400a5e0bc3503 SHA-1: e88d5ddf5dc4d8b81c7c8950f1715dc4acda155f SHA-256: 921f00582836ac2f7ec8c454fca1f889ceddb7b3303e3970cf1a3c692eae52be
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 phishing or trojan payload. The document body, though heavily obfuscated, contains text related to "unblocked movies" and a URL, suggesting a lure to a malicious site. The presence of embedded URLs and the overall detection by security tools strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9746

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://traffset.ru/aws?keyword=unblocked+movies+66+avatar PDF link annotation
    • https://terurudib.weebly.com/uploads/1/3/4/3/134381327/4490245.pdfIn PDF document text
    • https://sanizazifu.weebly.com/uploads/1/3/4/5/134599836/vomop-xewer-soxan-lupomojed.pdfIn PDF document text
    • https://luwinititik.weebly.com/uploads/1/3/4/5/134587042/8555382.pdfIn PDF document text
    • https://revibafejinaj.weebly.com/uploads/1/3/4/4/134485322/6559802.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/6829222.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/ef27ab6a35.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/2df7376c-1f62-456f-a5e6-d0295a7a532e/remisejoseke.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/grinch_tervis_christmas_tumblers.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/kobasiwibufufonedepep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/928f0a17-2671-4cc0-80e4-2320ea93882c/24712378627.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/pathfinder_axe_beak_mount.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/el_caso_de_cristo.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/92864716601.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_off00040fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40FCF 7644 bytes
SHA-256: 6041c3df7a19d891525af1cc3658a398b3385752d19925c8424b1c360c416f46
font_01_sfnt_off0004291e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4291E 5492 bytes
SHA-256: 099d775ba70b352b60bf00a8a6f658358b8e3696d1208045ade90f63ff4e9781
font_02_sfnt_off00043bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43BBE 18196 bytes
SHA-256: 9fa63ce7e512f22cca0d37d0eb3fa08b7d536e134513edd46a2bd0e64721d7b7
font_03_sfnt_off00047199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47199 16316 bytes
SHA-256: a2d115f0f97de8ad79ff358ffc77a456361852623a062a0fc59f2585ee3261ce

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