Malicious PDF — malware analysis report

Static analysis result for SHA-256 02440d93ab2567d0…

MALICIOUS

PDF

71.1 KB Created: 2020-10-05 22:37:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d069c40a0c80c7a7ec330cc482fcca52 SHA-1: f00b96eb1cb1bda5f10f81e7a8e7fd3c3665215a SHA-256: 02440d93ab2567d0fa1bcaedabaaf57ce338d2a03f16d081b36fb3bbe7eb9a36
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a known malicious redirector. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of a link farm designed to direct users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs suggest an attempt to lead the user to external malicious content.

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/strik?keyword=mooney+m20j+poh+pdf In PDF document text
    • http://files.monipirie.com/uploads/1/3/2/8/132814239/2193104.pdfIn PDF document text
    • http://files.kathleengallaghercunningham.com/uploads/1/3/0/7/130739755/5533543.pdfIn PDF document text
    • http://mijidud.linktober.com/uploads/1/3/1/4/131406893/1025ab49f35.pdfIn PDF document text
    • http://panetumap.ashleyjanaeart.com/uploads/1/3/0/7/130776791/vojifagikizokunitotu.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/1/0486/0870/6725/files/powersoil_dna_isolation_kit_mobio_laboratories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8059/6638/files/fafepadedilirifupepazobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5085/6348/files/jotomarutipoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7123/files/wiwilelikuwud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0979/2407/files/35843666278.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/647cbcb9-a0ae-4a8f-806c-59accc1e1843/sixisokokunubivevose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ded01a0d-4e62-4001-b33b-fd05476c6717/49891955895.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_off0000c29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC29D 4880 bytes
SHA-256: 8dcae3b3d82ca71f6354690ec5910f66099da2adae81baba951a3180278f524e
font_01_sfnt_off0000d31c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD31C 14932 bytes
SHA-256: a25e6fa5c1f3b6e57c7c14c9d976e379666512528b42ac1963f3166549a86faa
font_02_sfnt_off00010169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10169 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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