Malicious PDF — malware analysis report

Static analysis result for SHA-256 97699e44a0b6cdbc…

MALICIOUS

PDF

115.1 KB Created: 2020-12-16 11:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 903248d238547e6fafb4325d573dcd29 SHA-1: affd0afb0b73b90cde20c001ea3c6de66e88f205 SHA-256: 97699e44a0b6cdbc146a23d0748649202086793f1a04bc36f4ccec68f9826b6f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by both a machine learning classifier and ClamAV, with the latter identifying it as a phishing trojan. The document contains an embedded URL pointing to 'traffset.ru', which is highly suspicious and likely serves as the primary lure. While no scripts were explicitly extracted, the presence of an external URI and the overall classification suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/123?utm_term=scooby+do+ringtone PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454541/normal_5fa803daf3d3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_5f9b22ba5fad4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/81eed247-5dc1-46de-9089-3f92f5bca8a2/zumelebokajekutanujajum.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/search_excel_spreadsheet_on_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/texifaxepag/cheapest_marijuana_stocks_today.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/sample_binary_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d98e9a29-90f6-4b5d-8f9e-3160a5d24294/dragon_quest_11_character_builder_jade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9956e690-0f91-48d4-81e4-1b6fc33c607f/bawov.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/neet_biology_practice_papers.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/97349435090.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/busipubebosobubev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75e4644-2c1f-41c5-b900-59b9115f8af8/battlefield_5_fps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4d24ab5-c98a-4c7f-9276-6444bb86896f/fact_family_worksheets_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f6e771e-bf34-4053-a532-02ba6913f3e7/todunitojawim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec62b4a-d54d-480d-92fa-4e8f1d4924a2/zippo_lighter_walmart_canada.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C9E 6640 bytes
SHA-256: 6c9df98242f75a4f2f8eb49d36bc7d6bfd44408bc904e4f105077dd9ad0cebdc
font_01_sfnt_off00017343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17343 5032 bytes
SHA-256: 28f17d5110fc7198ed18934a97f2a929ca6602d9d8ec5c97b67e7596f1107cad
font_02_sfnt_off00018478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18478 10836 bytes
SHA-256: e415356e6837042e50386af718d56646aa75282cbc666bde00223f315ee306ca
font_03_sfnt_off0001a982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A982 16212 bytes
SHA-256: 1439a7c8314dae5042c358e01d56b50ebe9f38a2c630300dcc88c7f805fb4125

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