Malicious PDF — malware analysis report

Static analysis result for SHA-256 9915987f9a12dc90…

MALICIOUS

PDF

79.6 KB Created: 2021-06-02 22:27:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9f08d4dc129826a955a122460ca12b8 SHA-1: 378db75969ffe36aaca4daeebf9bfb720af9bb50 SHA-256: 9915987f9a12dc90c706a63539bfe4909456a3a16124fb453f6a1a37d0516204
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to downloading Minecraft mods, which is a common tactic for phishing or malware distribution. The embedded URL `https://laborke.ru/pbw?utm_term=how+to+download+mods+for+minecraft+windows+10+2020` is flagged as suspicious and likely leads to a malicious site. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=how+to+download+mods+for+minecraft+windows+10+2020
    • https://cdn-cms.f-static.net/uploads/4456116/normal_6046f7f991038.pdf
    • https://static.s123-cdn-static-d.com/uploads/4458622/normal_60aff9613e636.pdf
    • https://static.s123-cdn-static.com/uploads/4444853/normal_5fc6cd1c18e63.pdf
    • https://cdn-cms.f-static.net/uploads/4455403/normal_6028e4bae4185.pdf
    • https://cdn-cms.f-static.net/uploads/4408184/normal_600f2ccd26e98.pdf
    • https://cdn-cms.f-static.net/uploads/4485015/normal_605468b44b0bd.pdf
    • https://cdn-cms.f-static.net/uploads/4475391/normal_6031befcc46d6.pdf
    • https://static.s123-cdn-static.com/uploads/4366381/normal_5ff2722ea6430.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/822d85fa-6a24-4dc7-a87c-13bb8b184179/old_school_runescape_membership.pdf
    • https://uploads.strikinglycdn.com/files/7cd6c160-34b9-46fb-92b5-410c22a3ca9f/navy_seal_training_drills.pdf
    • https://uploads.strikinglycdn.com/files/dc0aa10f-f8d4-4492-bd5a-06b70a29bc85/xivapamomal.pdf
    • http://redejok.pbworks.com/f/clickplay_time_6_phoney_digits.pdf
    • http://zopujoxobug.pbworks.com/f/assassin_value_list_2020_february.pdf
    • https://uploads.strikinglycdn.com/files/c34bd5ad-5001-40f4-91f5-1b0b81224c2f/tefom.pdf
    • https://uploads.strikinglycdn.com/files/f47a3f68-4729-4e37-a629-fcabffdfdcee/optiplex_790_sff_dimensions.pdf
    • https://uploads.strikinglycdn.com/files/729690e0-fa5a-4d1e-b33d-9821323a2d20/trx_multisport_strength_workout.pdf
    • https://uploads.strikinglycdn.com/files/1c923304-3a37-451a-b178-db76e6cef45b/fedex_ground_careers_near_me.pdf
    • https://uploads.strikinglycdn.com/files/df085630-fa0c-4698-b73a-c60763e144a8/livro_thirteen_reasons_why.pdf
    • https://uploads.strikinglycdn.com/files/074fba4c-d8ad-4752-90c3-cbf4214b3ff5/how_to_read_latitude_and_longitude_on_google_maps.pdf
    • https://uploads.strikinglycdn.com/files/b5996ddd-11ea-48a7-bb64-d2e5382fb166/banis.pdf
    • https://uploads.strikinglycdn.com/files/71e8a510-e4b2-4c48-89ce-7889a5c21dfc/98176517531.pdf
    • 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_off0000edda.bin
77615bc4e5c8200556f7189f6b60c87ffc222b7e62d8ba547917fe455d371779
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDA 5336 bytes
font_01_sfnt_off0000fff1.bin
f8c41267c4b8ee8759ac991781bf5244b6259016ed63745dbf08cb1d4527ec64
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF1 10128 bytes
font_02_sfnt_off0001228e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1228E 4324 bytes