Malicious PDF — malware analysis report

Static analysis result for SHA-256 32369c7765710ee4…

MALICIOUS

PDF

77.2 KB Created: 2021-05-24 08:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 5676196eda770b6afe7e5887a04e9b4d SHA-1: 47e9b9afbe29cddea439b172886c3abd410c114c SHA-256: 32369c7765710ee4a5914fe2dd0983adc3d4045f9e9215446a481d5c81278fbc
104 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The presence of a visual download button and an embedded URI pointing to 'fokemale.ru' strongly suggests a phishing attempt to trick the user into downloading a payload. Although no scripts were explicitly extracted, the PDF structure and the embedded URI are indicative of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/strik?utm_term=woodcock+johnson+test+for+dyslexia PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/chama_chama_new_video_song_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0785a439-f1ba-4ca5-8b05-3f92b0aed81b/core_cal_bridge_csp.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/ridgeway_grandfather_clock_winding_key.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/lidujasenulibomakekiteri.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/what_does_fl_mean_on_my_duralast_jump_starter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a9302b5-0d53-4d65-adf8-eb55a5ef2511/66319972320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ec653f4-b2d5-4b68-ac63-1026c50f193b/wenewenajexevofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7078e15c-35b5-4d8c-ad61-a086c28828ed/safety_data_sheet_meaning_in_urdu.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/57376962390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa4532be-f426-474c-a43d-81777879b397/95803398737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5d7eead-21fe-4784-a605-aab63f306535/best_basic_english_grammar_book_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6451a44d-b2ab-4f8a-930d-f5cb160e81d2/65893055242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/085a0332-6b50-4646-b61d-5ff6f832d3fd/2395431640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/602b883e-506b-45d2-963b-88e45e2dfce7/25885003374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16287285-2763-4a60-a951-dbd442ac2a9e/xumanuvigu.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/bogutagafabubes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db7227e4-c098-40db-aadd-f6e10a9d505f/how_many_calories_in_a_hard_shell_chicken_taco.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/business_plan_examples_for_students.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/why_is_wisdom_important_according_to_the_book_of_wisdom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f645ea6-65d4-4217-a67b-7c3fd9f1840b/how_to_repair_frigidaire_affinity_washer.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_off0000eb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB81 5432 bytes
SHA-256: 8c9fe3438ee4b0dbe25245692d8b212bd030af0f0cb4f6ff64de635c6f3b30be
font_01_sfnt_off0000fe18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE18 11796 bytes
SHA-256: 296eba2c3e1f014365842299f19824ae7b9bf36ff8bb45914743ac0966cd009b

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