Malicious PDF — malware analysis report

Static analysis result for SHA-256 67bcb74096d8a636…

MALICIOUS

PDF

77.5 KB Created: 2021-03-22 17:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e85b7dc4563d5bc6c2f66e8d2400662 SHA-1: 225e61639d342134caf7c517c74f1713fb357a52 SHA-256: 67bcb74096d8a636964ee748bc288c0c18d2a8431459b15c83ad01416544125f
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 as part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be related to Excel, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/123?utm_term=if+then+statements+in+excel+multiple+sheets
    • https://cdn-cms.f-static.net/uploads/4444378/normal_604f34f3763e9.pdf
    • https://cdn-cms.f-static.net/uploads/4465394/normal_602adf97edc26.pdf
    • https://static.s123-cdn-static.com/uploads/4450719/normal_5fcefcccc71de.pdf
    • http://manetebanax.22web.org/southwest_airlines_case_study.pdf
    • http://fikepoj.22web.org/asc_timetables_2020_free_full_version.pdf
    • http://prizinsta.info/lg_true_balance_washer_dryer_lint_trapxz6e5.pdf
    • http://mybiol.site/class_9_english_beehive_help_bookbtw1r.pdf
    • http://everydays.space/destiny_2_steam_new_player_guide3q27w.pdf
    • https://cdn-cms.f-static.net/uploads/4490929/normal_5fdacf4d74057.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/92d865f7-9fc3-4190-ab5f-ee612603a9f0/fewudunumudaxoxoruwav.pdf
    • https://uploads.strikinglycdn.com/files/d9dfe9aa-c0ad-4f12-87ac-c5689c7f1983/pawimolubopu.pdf
    • https://uploads.strikinglycdn.com/files/0dbfc3ff-f1ae-45a0-85dc-8e2e71bf2187/harry_potter_box_set_books_costco.pdf
    • https://uploads.strikinglycdn.com/files/ac1f044d-672b-449d-921b-f6dcd065adec/97473823994.pdf
    • https://uploads.strikinglycdn.com/files/e6d7b3f9-b597-4962-86cd-a72b54ac3764/28922766709.pdf
    • https://uploads.strikinglycdn.com/files/23958078-5f86-49db-af8e-ec1189b8cfd2/15506092034.pdf
    • http://jutepopoladajol.epizy.com/xasedategozogabax.pdf
    • https://uploads.strikinglycdn.com/files/87b7039e-bdfd-48f6-8744-d95b67f972cf/66312955269.pdf
    • https://uploads.strikinglycdn.com/files/1423166b-f295-4cc4-8ab3-20a9ea99a9de/what_is_pbl.pdf
    • https://uploads.strikinglycdn.com/files/b64e7d91-bc2e-4cde-a16e-58cf3ea503e2/53620859601.pdf
    • https://uploads.strikinglycdn.com/files/edb3e949-0446-4ad1-b060-db34b58f77d4/5596625724.pdf
    • https://uploads.strikinglycdn.com/files/0bdc837b-68fb-4cf5-9b7a-1ac5a0833df1/the_likeability_factor_definition.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_off0000f10b.bin
555cdc6a4e56434362b77dd90ffe681d14eefb7be811da1b08ab071ed14cb8a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF10B 5164 bytes
font_01_sfnt_off00010287.bin
11965a2128132b2fee133fa2df291dc26f631593ea2a2b0f5910c7640cff1629		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10287 11096 bytes

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