Malicious PDF — malware analysis report

Static analysis result for SHA-256 44184e867b15c48a…

MALICIOUS

PDF

78.2 KB Created: 2021-04-13 13:48:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 737c823d8f0bf4f38064a71fab1eb4c4 SHA-1: 212673d9941e7055cb2c823ca96fbd135e7c63b0 SHA-256: 44184e867b15c48a6011f3fef0f5ea3c25e5419dcc6d22fe711b5b330c9a5e07
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially garbled, suggests a lure related to song chords, which is used to disguise the malicious URL.

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://seumenha.ru/strik?utm_term=the+power+of+love+huey+lewis+ukulele+chords
    • https://cdn.sqhk.co/sumavevop/6zvkiiN/pacify_as_a_noun_in_a_sentence.pdf
    • http://fofumumitem.medianewsonline.com/articulos_definidos_e_indefinidos_worksheet.pdf
    • http://wirobigi.medianewsonline.com/hobart_handler_140_for_sale_craigslist.pdf
    • http://nenonazuf.scienceontheweb.net/beguxibidewapinew.pdf
    • https://cdn.sqhk.co/melipetoluf/gnjigY2/highway_to_hell_tv_show_id.pdf
    • http://runojiwum.getenjoyment.net/zumirubujobuvikipi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_3e93da348a1b4b98b83b3c996a1ef731.pdf?index=true
    • https://3c199e1c-ff83-4553-a351-db1e9419129c.filesusr.com/ugd/424a74_50238b79da5f484d9ef14f34560b10ff.pdf?index=true
    • https://uploads.strikinglycdn.com/files/79c3bf5a-68e2-4da1-b9e3-4896c68e2c1f/r_programming_for_data_science_coursera.pdf
    • https://aa4de0c4-a7fb-47f6-97fe-5721705e71c1.filesusr.com/ugd/824332_b1b0b72375504c34a13bcbdc9e546303.pdf?index=true
    • http://witesenigo.atwebpages.com/clasificacion_del_bocio_tiroideo.pdf
    • https://uploads.strikinglycdn.com/files/619523d0-0d31-4da3-a5c4-48b3f5da7480/does_brandy_melville_have_returns.pdf
    • https://uploads.strikinglycdn.com/files/e525c04b-31e5-4e53-97db-6ce382070dc5/que_relacion_existe_entre_la_teologia_y_la_filosofia_patristica_yahoo.pdf
    • https://uploads.strikinglycdn.com/files/18ea2fd8-f114-4e29-9f26-b04f1729ec00/code_name_verity_summary_chapter_1.pdf
    • https://e8b83640-91e4-44a0-a69f-c2468797902f.filesusr.com/ugd/ee4a13_a250be0c457e4593b5fb5cebc75c0303.pdf?index=true
    • http://sijomawawu.epizy.com/bezopiwi.pdf
    • https://36fc1fe3-b646-4cc1-b6e9-de51469aea27.filesusr.com/ugd/3eb4bd_5f9861a9911c41558947dadc67d4a098.pdf?index=true
    • https://uploads.strikinglycdn.com/files/79cef9e4-a4a0-4700-8077-10a8051fbbab/18718913461.pdf
    • http://wubogijogazerew.epizy.com/35703111673.pdf
    • https://09ec9d85-9312-4337-94d0-b84080e05f2e.filesusr.com/ugd/ac0094_e191b39064cb461996ebbe61158c0cbc.pdf?index=true
    • https://5bf49506-6ef1-42f8-8f90-7e3689255fd3.filesusr.com/ugd/8fe1bf_fc14e06eb6454c1f89b07fd3feb33e04.pdf?index=true
    • https://ff06b2c9-6223-4357-b4d5-1bf3807c749f.filesusr.com/ugd/717131_f9c8e544dc3247cfa663e73b5588e3c9.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e593.bin
7801927dc35ccb35ed3d1088a72378e7aaa356d81abfd28c32cb95c54beda00b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE593 4996 bytes
font_01_sfnt_off0000f6be.bin
8978152be3e9f8558f714f6ca9b5187ba20fd6561a70d7ddca4413823676c348		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BE 11068 bytes
font_02_sfnt_off00011cbc.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBC 4324 bytes

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