Malicious PDF — malware analysis report

Static analysis result for SHA-256 16003fe6a562109d…

MALICIOUS

PDF

40.7 KB Created: 2020-10-21 22:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7e9248b9d94379b34caf3f1fb24051d1 SHA-1: 7822c2a81a3c02e94e2aaa3a15a9d5defa2f7fd2 SHA-256: 16003fe6a562109dae42026805d03adf62a0944919836e3b46003bef82d3f773
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to link farms and redirector infrastructure. The primary link, 'https://gettraff.ru/wb?keyword=o%20poder%20do%20mito%20document%C3%A1rio', is identified as a malicious redirector. The document's structure and the ML classifier's high confidence score indicate a malicious intent to direct users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/wb?keyword=o%20poder%20do%20mito%20document%C3%A1rio In PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/suwuribazonabavawo.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/3174677.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ramugimexixepaba.pdfIn PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/navixirifodeda-nuganutilu.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/4685708.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/pegifebuxosa.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/6c3897bb4ec1a.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/e4e04ccb83ff3.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9594994.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/bezaxiwewodi.pdfIn PDF document text
    • https://jozokuxig.weebly.com/uploads/1/3/2/8/132814463/9658742.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/beragadevow-lewekoleb-vezije-wovafolezod.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/mexigosojabalo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/graco_backless_booster_seat_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/bible_family_tree_abraham_to_jesus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0771/9603/files/54208543049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6086/6455/files/bownet_volleyball_set_up_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/0150/3897/files/54430992690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a044652-0d08-47b1-a225-31f83361a12d/55897691314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f413134-c7a6-4e5c-b311-529599cdb5f8/60711048858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f5d821a-1995-42bf-a02e-e2f1496b65c0/guzoniporofokebatenejunof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05c2b1dc-f936-45a0-a565-51cb6fbfe0eb/pokubuzitake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/6280/8742/files/video_maker_app_download_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8104/9274/files/xusivij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6439/1367/files/bopibikafidimipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3992/2625/files/fejuvonagupajawikobiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/redistributing_routing_protocols.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_off00005f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F91 5060 bytes
SHA-256: f2745f011e916688247d2138a828d473d6c403fdc3c2d7f55e670528f47644a7
font_01_sfnt_off000070b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B0 10664 bytes
SHA-256: 8766fd5f65489db2c5ffb12fcc73066763fb39c58bba5c55561e82b78faf232f

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