Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1383adc46d77509…

MALICIOUS

PDF

78.4 KB Created: 2021-05-17 22:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: af60125dc918cc575c61fe41d3dd2f91 SHA-1: 900ef3fafbc257c9d5ceb0d05698647dee85c01d SHA-256: e1383adc46d7750937823b5b813f5cddc371f409df86c65a19eb7d4f2db19faa
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://gimoguvi.ru/strik?utm_term=how+to+charge+pocket+juice+4000mah PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393514/normal_6067e80c58571.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413011/normal_6047cbbd57a1b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/iadt_guidelines_avulsion.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/what_is_the_healthiest_meal_at_chick_fil_a.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/custom_gift_certificate_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/corporate_communication_skills_training_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/kubedukowug/kaspersky_antivirus_free_cracked_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4776be27-03c6-406c-b36c-799ce60451cf/what_are_the_basic_gates_explain_with_truth_table.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/pojidikebopatogir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95891b7d-6ee9-4cca-b2e2-f18798a4326e/xojalirul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d95d41a0-3ba5-43de-bbc8-aa3d5cead09c/analisis_literario_dela_obra_el_caballero_dela_armadura_oxidada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb7462e0-6ff8-45b8-a22e-a24dcff6a476/excel_vba_range_cells_copy_destination.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/challo_telugu_movie_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/base_plate_design_spreadsheet_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/facebook_cover_photo_psd_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/home_again_2017_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/does_lady_gaga_dating_bradley_cooper.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/activities_methodologies_in_software_project_management.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_off0000f43e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43E 5560 bytes
SHA-256: a569cdb6a784f890789fb24d1917d32481679fb8b04062b01ce93de6a2d2c40a
font_01_sfnt_off00010720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10720 11024 bytes
SHA-256: aa0f05f4a67e8299dbd0c20e8296c82138c37783923e07fa010573d700617e2b

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