Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e28e9db5c33700e…

MALICIOUS

PDF

77.2 KB Created: 2021-06-09 07:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a11b1fb4a2ac3a99e96c71ae9cd9c877 SHA-1: 2b6fda9ac7f37b654a73a4a5e023488c2f9e74a1 SHA-256: 5e28e9db5c33700ea09006e659c95453d26142cd9065e59811e50ec6cbb8f670
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 ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains an embedded URL pointing to 'https://huntic.ru/pbw?utm_term=mcpe+monster+1.12', which is likely used to deliver the malicious content or redirect the user. The document body, though heavily obfuscated, contains text related to 'Mcpe monster 1.12', suggesting a lure.

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://huntic.ru/pbw?utm_term=mcpe+monster+1.12 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473656/normal_60107785a7330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421466/normal_60400a7113208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401696/normal_6026d6bfc18c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485163/normal_60490df842cca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376625/normal_601e4978e40d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464065/normal_60437ada28811.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
    • https://uploads.strikinglycdn.com/files/ddf3d094-2b94-49da-aee1-0d9ea71a76fe/gabibub.pdfIn PDF document text
    • http://gafuxexosaru.pbworks.com/w/file/fetch/144549648/funciones_matemticas_4_eso_ejercicios_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0b05949-8cb3-4be4-9e46-62fc163d558c/55991004030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ce3b114-7bb7-4d86-87cd-28a28be28efd/kiwico_tinker_crate_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a6d2893-21b7-44cd-be82-12708113f9d5/was_jesus_born_on_christmas_eve_or_on_christmas_day.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adfa1d27-37c3-4398-99a5-4cd67e6c6901/what_does_it_mean_that_the_bible_is_the_inspired_word_of_god.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/431428f1-bbe4-4db2-8afd-a87b36b1c34f/pirates_of_the_caribbean_violin_sheet_music_musescore.pdfIn PDF document text
    • http://ronefete.pbworks.com/w/file/fetch/144492063/69222657863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f983486f-7db4-4791-aaed-42bfcf79ea86/refowurasekuxuruzova.pdfIn PDF document text
    • http://bokibagaror.pbworks.com/w/file/fetch/144655713/puvobavepokidetusox.pdfIn PDF document text
    • http://kukumepubop.pbworks.com/w/file/fetch/144909861/worlds_in_collision_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AE 4796 bytes
SHA-256: 4267fac28ff5e4e9a8666cec1e9c78c4b43f1474f29a99aa1fadcfedc38ac325
font_01_sfnt_off0000f5e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E1 10688 bytes
SHA-256: f819f7f8913ff5a820a8c0463ba7c80f12593dafdd30ee45d32e7003a84d583e
font_02_sfnt_off00011a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A0F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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