Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20dc636f2fb2176…

MALICIOUS

PDF

38.3 KB Created: 2020-10-07 04:22:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5173c7ce0dfd862d96ac80f1efd6116e SHA-1: eca0fbfdec80444eafcbcf4019885cba61b56a7e SHA-256: e20dc636f2fb21763815bc460a4d504bf27dbd25487733a9814f07a9c5601507
124 Risk Score

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?keyword=beauty+powder+drink+herbalife+untuk+apa In PDF document text
    • https://site-1036910.mozfiles.com/files/1036910/82738949638.pdfIn PDF document text
    • https://site-1038532.mozfiles.com/files/1038532/33199242394.pdfIn PDF document text
    • https://site-1039833.mozfiles.com/files/1039833/48484169380.pdfIn PDF document text
    • https://site-1042832.mozfiles.com/files/1042832/namulusimewemojufezosu.pdfIn PDF document text
    • https://site-1041503.mozfiles.com/files/1041503/fudutikomabigigelado.pdfIn PDF document text
    • http://fodivulaj.lauragambrel.com/uploads/1/3/1/4/131455508/7482829.pdfIn PDF document text
    • http://files.safechildcoalition.net/uploads/1/3/1/4/131452883/gaxaxutozo-litebajefel-bupomiz.pdfIn PDF document text
    • http://files.post37.com/uploads/1/3/0/8/130814492/6882512.pdfIn PDF document text
    • http://gasomiko.mikeuziel.com/uploads/1/3/1/8/131857966/senolasejifusan_sekikumiwazovuv_rudevok.pdfIn PDF document text
    • http://files.milimawear.com/uploads/1/3/0/8/130813846/bd0854.pdfIn PDF document text
    • http://zirivido.microfading.com/uploads/1/3/2/8/132814930/fimarurodo_wotaxixemo.pdfIn PDF document text
    • http://files.natebirky.com/uploads/1/3/2/3/132302765/zufikumog-lugemap-beparovasa-vewisaveranozuz.pdfIn PDF document text
    • http://files.candlewyckhomes.com/uploads/1/3/0/7/130739480/julixarifubekaf_dudafekuduri.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/f1b0eb09-ee1a-48b8-b1ff-f6cd39ee770a/judelowagimeke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57f16f9e-8e78-4a1b-97d4-bcb231d081de/90641510285.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1d31e67-0d50-41d4-85b7-4afe8200e0b7/16251982372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fa211eb-0b00-403d-a2aa-07791a3de152/favatawidavubimorurabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411244d0-b256-4db2-b94e-2f87bd58615f/59517044407.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_off00005533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5533 5396 bytes
SHA-256: ada53dc6d1fa88c4ec674e0ea99ba95a130fa59e0388d2532b6bf483c12ea877
font_01_sfnt_off0000679f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679F 10656 bytes
SHA-256: c879f140e71ed40d64cc30013cfd1594eb929aa8bdeb4eecb30d33b3d72a285b

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