Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63fbc950c84d784…

MALICIOUS

PDF

115.1 KB Created: 2021-04-28 10:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bf6704622191ff0e9c3a9a959db1812 SHA-1: 1463de8002be0ea1c4e3c30db0f2f2827bcb6a6b SHA-256: c63fbc950c84d784a2a90ab146d7bd12448acdee3588d7e89ae625a3a7a236e7
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to a movie title, likely serving as a lure to encourage users to click the embedded malicious link. No scripts were extracted, but the presence of external URIs and the high ML score indicate a phishing or malware distribution attempt.

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://botokaw.ru/strik?utm_term=the+maze+runner+scorch+trials+where+to+watch
    • https://cdn.sqhk.co/videgogaf/gibqaLk/game_dev_story_switch_review.pdf
    • https://cdn-cms.f-static.net/uploads/4481417/normal_600ccfbfba9d5.pdf
    • https://cdn.sqhk.co/zimuteraf/gcCgcE0/best_workout_app_bodybuilding_2019.pdf
    • https://cdn.sqhk.co/fedovipawe/4iegijc/54915191411.pdf
    • https://cdn-cms.f-static.net/uploads/4368979/normal_60650db75bb4e.pdf
    • https://cdn-cms.f-static.net/uploads/4455645/normal_606544100ff79.pdf
    • https://cdn.sqhk.co/nukunudakiju/haie7TD/megune.pdf
    • https://cdn.sqhk.co/delojiwuguj/heTbidM/asus_x570_dark_hero_release_date.pdf
    • https://static.s123-cdn-static.com/uploads/4451355/normal_5fdf38685f8e5.pdf
    • https://cdn.sqhk.co/vadetegubufo/BHgjhRt/fivilasuvekofaradep.pdf
    • https://cdn.sqhk.co/baxemazisod/gfwoWft/smith_s_electric_knife_sharpener_instructions.pdf
    • https://cdn.sqhk.co/jotapepikota/jeifidZ/country_music_videos_free.pdf
    • https://static.s123-cdn-static.com/uploads/4450418/normal_5fe1a97bb7eb4.pdf
    • https://cdn.sqhk.co/nuxezitowefi/vicFLjd/5072594825.pdf
    • https://cdn.sqhk.co/diridenafa/ijIsNjg/assuring_transformation_data_collection.pdf
    • http://pimebujeben.66ghz.com/53160028420.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gagaresereveku.epizy.com/painting_easel_plans.pdf
    • https://uploads.strikinglycdn.com/files/a3f232db-058c-4522-84ae-24c2844746a0/geometry_worksheet_polygons_angles_measure_answer_key.pdf
    • http://jutivowewinuled.epizy.com/49568668504.pdf
    • https://uploads.strikinglycdn.com/files/4d44082e-0797-4f55-8bdd-2b02d921e63b/varileruwikobisevonilutis.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017c29.bin
a03cb36209241de11aae3272c690b52b05ee3c8c4ae526dc69ede8db07b83487
pdf-font-stream PDF embedded font (sfnt) at offset 0x17C29 5128 bytes
font_01_sfnt_off00018d81.bin
e00b5c1a138344c74a6e3ce81ad59f7d7f2eac7b487ea3a25d102ff7d0f6e96f
pdf-font-stream PDF embedded font (sfnt) at offset 0x18D81 15304 bytes