Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b76c67b5d2237e…

MALICIOUS

PDF

35.8 KB Created: 2020-10-16 10:35:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 2490da44e8ae8e55a753f105d5e3d454 SHA-1: 7ab546c579ea7d93985b0e56238fbcc5d36ea17e SHA-256: d0b76c67b5d2237e01fc97cb2abd1eb3a7210f554f4f8f0cc34dad322e7ed840
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, identified as a link farm, directing users to potentially malicious websites. One such link, 'https://ttraff.club/pify?keyword=manually+eject+disc+xbox+360', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains fragments of URLs and metadata suggesting a lure.

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://ttraff.club/pify?keyword=manually+eject+disc+xbox+360 In PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/2491377.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/wuxifabasogamorodugo.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/wozumadaku-mukevewurovebu-nefebo.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/xelikanotuzifaja.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/bef974e3-6f79-4885-ae1b-c8f34383afe7/13299390754.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8550dac2-22c4-4dd6-ad79-d63d6888f820/feluxuxefiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b2931d4-3b30-494a-9fd0-45286f2c2d1d/lapokiloki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe2b13ed-206b-4b84-a50d-2e36072a4361/63446485697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23dd6b7e-1acb-4cce-a1a1-619bdd34f548/xuvebejanipavexuzemokel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8c37adf-b2ce-4d1e-9196-bf33ab7551c5/gerosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a87eca1-4fd4-4d54-85d0-5892d5712c2e/14652346634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6199674f-a2b0-484c-bf3f-793c1fcc4a3d/roxewejalabonexopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9640966d-5045-4653-b513-232f3857d71a/gizatodijebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3332/8278/files/dod_cyber_awareness_challenge_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5711/8883/files/rovedanumezokig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/florida_home_inspection_checklist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90a646c4-42d7-4d51-b9a9-7eeb1ee744f5/pisirukajisiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a01e5abd-cada-408a-9e1b-f39e61bcdc11/vamib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0cc2741-8f58-4027-8981-5a5a3203196a/vevodedevabumepomeseba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64047876-9f36-4854-a3b9-b987f647e98b/pamutifoso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81a139ce-f579-4a57-968b-d1f52254a113/88065574853.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_off00004da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DA3 5688 bytes
SHA-256: 2b7f1013a11c95d9ef12d1065903301e3e841a371188b812885109266100ec67
font_01_sfnt_off00006118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6118 9676 bytes
SHA-256: 80e8d8ac9211ae76a596a97bba19076c97fc4e1f55082cb39eda3fba3e77cdc7

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