Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d2172f477b887b…

MALICIOUS

PDF

64.1 KB Created: 2020-12-10 23:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0f4e6057393d9cc3a42be9e3c10f7724 SHA-1: c1e185ec482f98ce461bcbd82cf7cc5703198a77 SHA-256: f2d2172f477b887b4ab118a63992190df8df327730e29c458046fefd63696b8c
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://cctraff.ru/aws?utm_term=confluence+edit+meeting+notes+template In PDF document text
    • https://static.s123-cdn-static.com/uploads/4419623/normal_5fc99a417f4dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495043/normal_5fba7d98560de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475730/normal_5fd1011658adf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381098/normal_5fd266b939a65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369654/normal_5f920c72dfc19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385020/normal_5fada1d0341a1.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/5fbce344be7cfc36344e8aaf/t/5fbd160c4f07da69d6423aac/1606227476326/exception_processing_message_0xc000007b_parameters_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9179dab-4f6d-437b-bbff-762818d2d59d/wumewazuxozojaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa10cae5-32dc-47f1-9574-e6e1a36a8286/92969143953.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc505c01c8c7413144c6c55/t/5fc5f8df9ee0f32b87214c70/1606809823461/guiding_light_cast_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc110906609fd0ee7923de0/t/5fc181cd9ee0f32b878c08a1/1606517198146/praxis_5017_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e9045d9-7705-47c9-a368-95ce45dc324c/the_wing_chun_compendium_volume_one.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a98e58a6-7b44-4a89-a9cf-11eb13af3855/61454297464.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfb9aef3361272aec1586/1606220698496/tikerasowupoviwit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10afc403f5353fd968892/t/5fc32d969b1ed0353844b09c/1606626710578/82064342132.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6115e18c5c478ef3c2d0/1606377749729/86229662984.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_off0000bea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA3 5284 bytes
SHA-256: 2e0e45fe8bc4c3d2a4db8564f7c53142369208964d928e3fa71602b35f0b15b9
font_01_sfnt_off0000d093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD093 10112 bytes
SHA-256: 97ec1a831e31b9562e1c6765cad6640ed63280db43c64e86f8ac64eeb9197d6f

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