Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab15f76e051d333…

MALICIOUS

PDF

70.6 KB Created: 2020-12-23 07:44:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 074bde0b3532fdf9b672b96f421f1240 SHA-1: dffbdbe77244aff185665c1ad1f18ba974c7a6e9 SHA-256: 7ab15f76e051d333f83bbe14decf3fd4558eb706f736078cd164f141e6fd8fbc
154 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. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/strik?utm_term=dragon+village+m+dragon+rpg In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386087/normal_5f9061216a872.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408720/normal_5fca60fd15b97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381102/normal_5fa010f99ecb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fe2b5de8327224ee87c1c47/t/5fe2bc4bdd13d5667b297b6a/1608694861716/ihss_electronic_timesheet_training.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/introductory_mathematical_analysis_14th_edition_solutions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a834abaecd33182d7d6c/t/5fd087415efba8153b25c2f0/1607501635283/qbert_arcade_board.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/bootstrap_4_cheat_sheet_with_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/penevoxalexiwisumi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13c726609fd0ee793905a/t/5fc9e7ad87b36f46d40295d4/1607067566133/dagof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53c12916-f983-4b36-baf7-4f475f8beec0/pilot_mountain_state_park_trails.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/91383645371.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78deb5c272238a81acf84/t/5fd0933e48ae4d121804bf80/1607504705270/margherita_chicken_olive_garden_recipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b0ef0b9-53fe-4bcb-ab6b-aede7f0050a9/livro_sherlock_holmes_casos_extraordinrios_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE4 5160 bytes
SHA-256: db897d2633b0f6bcea65a1c0e2e6de12a8fdc08523c6cc3c7ca7bb69030a92cd
font_01_sfnt_off0000cc6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6C 13924 bytes
SHA-256: b28257d9b96ff931697bea21ab1655186d4b722c94bcb70fa7e7c761261a022e
font_02_sfnt_off0000f896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF896 16132 bytes
SHA-256: 06d84a79787f49517cba9647d12dd77c675544b9e46e70dbd0c3ec2b8d2a160e

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