Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd32176941235d91…

MALICIOUS

PDF

172.7 KB Created: 2020-10-27 05:25:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-28
MD5: b9d35b5a78e8763d991cc63ad797436e SHA-1: 1c9f518ee22158ef31fba73c9e659df4e28d508f SHA-256: fd32176941235d9144c7f37a04e69d358f6cf0ac8ab6d6ac4394826c48962e60
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely used to host or redirect to a malicious payload. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • 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/123?keyword=romans+9+25+meaning In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384470/normal_5f904d4de08e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f9135e628969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5f8cb556a7d2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f898673b1fd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392853/normal_5f96393db25e5.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/pudefonarira.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/womijol.pdfIn PDF document text
    • https://tamagokevalagir.weebly.com/uploads/1/3/0/7/130776783/rofezutonufimutoge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5f8771f5a7007.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_5f8dee44c5adb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406482/normal_5f97563fd2a91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375076/normal_5f8fdf558b07a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8277/5212/files/observation_record_of_a_self-proclaimed_villainess_fiance_epub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7903/1712/files/sample_iaso_tea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1433/2309/files/89780565425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2060/5850/files/xesateloruvoverexuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b104c6c-6f72-44c1-bc99-a28f514bf056/popakixawutase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e4184ee-f570-425d-9aaf-359f705bcde2/abdel_aridi_grenoble.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/802dcf58-40ac-4149-a492-9f42416e364a/wevute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f306190-d15c-4b36-8299-c8ffcebc4d09/xidatopuzeselivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f156902-fe66-453e-bf28-aff022a87596/science_de_la_logique_hegel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9210cdba-1beb-433e-ae88-2e750214c1eb/75855050615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df327c81-3fe9-498e-bf9d-97274ab2c892/dejaveguvevezuri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1dd429c-9cb3-4037-a3b2-a4aadf476f7e/probability_word_problems_worksheets_5th_grade.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25B92 5004 bytes
SHA-256: d9d04cd57498080c3e2ebd891b633efa7f4ee65fde598dd52146f1d5cbf2815e
font_01_sfnt_off00026c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26C73 12496 bytes
SHA-256: 6c8b2422f76a60cfdb0fc477b8673ea8bb2c3652b32ae394e4c09c33eb39c5b8
font_02_sfnt_off000294f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x294F4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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