Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe7663cebc2da51…

MALICIOUS

PDF

77.1 KB Created: 2021-06-09 02:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 3927d0563b4170c81ece079f77497452 SHA-1: cc735fcbc3f2108d589b6109f083f4a5f71bacd1 SHA-256: 0fe7663cebc2da515854ff415143bd454f8171732a4ec8322addc51dfb81bf74
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directly advertises a "Warframe money hack", indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI are sufficient to infer a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://laborke.ru/pbw?utm_term=warframe+money+hack PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379474/normal_605024fd9f6b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452861/normal_6004ecab72729.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4456705/normal_60affbf74fa2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421959/normal_6068b7d4928f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460725/normal_6026152d37d40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413019/normal_60243fa99f60a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446260/normal_6008c40e064f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460725/normal_6038152139ef7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449777/normal_606de4834049c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411696/normal_6054ad2b7466c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486213/normal_604730b6e3a9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gafuxexosaru.pbworks.com/w/file/fetch/144666648/duwejogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/759aa77e-aa1b-4b39-b376-49c6bf6e1ea2/25588913096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c9c108f-62f8-4ab2-a872-ad0c8df1c1ab/how_to_analyse_data_collected_from_observation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b67497a9-8a62-40c4-8380-b7a3274e71fc/3812047116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54d4e469-f6c4-4836-b059-798307d5a6c5/esquema_de_la_historia_natural_dela_enfermedad_del_colera.pdfIn PDF document text
    • http://tereburokofe.pbworks.com/f/how_to_write_an_addendum_to_a_lease.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dde1ff19-ab06-4bc5-8b35-5360f34c4374/bitimaxolugajap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f744882-55b2-4f17-a1dc-68f11ccfba17/nuzawubitita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e3b7065-5baf-4f11-bd49-e0351c46deee/rowenta_iron_steamer_2_in_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b594e6e-45d0-4abe-87d2-eb68581bc51e/prayer_walk_guide_for_schools.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/984debc9-1f81-4c8d-af37-090989890091/avee_music_player_pro_v1_2.73_premium_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05053f84-45e3-48c6-85b6-ef4f3900aab0/lezisebaz.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE83 5092 bytes
SHA-256: 4cd02a23878f26b909a7556aff7101da4e7827c206536888f4441989d8030915
font_01_sfnt_off0000ffbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBF 11488 bytes
SHA-256: dca132a5cb54c291475928005380c713860197ed539553510e25aa351a3994d1

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