Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3fadeb69126e52e…

MALICIOUS

PDF

72.7 KB Created: 2020-12-19 04:35:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bc573d855b7364fb1d3dd80b3dbb773b SHA-1: c34c8649821b0b7c7379c700ff3c7e85942ea563 SHA-256: b3fadeb69126e52e1e77b9ceeeafe20113bda78add7d0e4f4115cf594fa0baae
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://ggtraff.ru/strik?utm_term=basketball+legends+unblocked+66 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/how_to_make_powerpoint_jeopardy_game_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f4c3a44-c77a-446f-913b-c93159add079/10820620149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/390ddf8d-2681-41b8-a3f5-914d9953def9/zariluvaxaxaxasim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/309592e0-5c4a-4856-b59b-4963279ee989/regojepefup.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc598a0085bf90c0e1d1088/t/5fc9654644b6661e4fc32e28/1607034184755/26357237168.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc7a3b0a190b16b315946c/t/5fdcd9e9493db9032ec1267c/1608309225952/add_bleed_to_in_illustrator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4746f2ea-2e7b-4910-bac8-123562500d96/34605857362.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e7d703f-54e9-4f2f-95f3-84faeb82f27d/66521670279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8abd7a3a-eea4-4b18-b882-37914bccacdd/intimate_apparel_play_full_text.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53334a13a450bab107d72/t/5fc6d67b6beae4543153eeff/1606866556821/dirt_bike_racing_fuel_near_me.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b8d58ef7301f8b31fd81/t/5fc9b2fffedaa13a48602ab8/1607054081124/las_vegas_softball_tournament_november_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcba3646033b444b395ad1/t/5fdd154ea7e0c87b26213a78/1608324431030/norikawezulubukogudu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c87788c99b6d37a67a80/t/5fc25d59eaf37e3b64e8efd8/1606573401571/wakuxofilobijatokulaku.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_off0000c7d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D3 5416 bytes
SHA-256: cd8897f16c3e3f5ce6ea2a362e3d2e6304df74878a173b8e43af21f13655c6ac
font_01_sfnt_off0000da56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA56 11108 bytes
SHA-256: df1978422300e764ac54121196df9537e2b6c8e26c4c8b231156366a2d7ad82c
font_02_sfnt_off000100a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A5 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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