Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d778b3a559f0a7…

MALICIOUS

PDF

58.0 KB Created: 2020-11-06 06:54:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-27
MD5: 06da1f26a4534e7a2b8ac429d44c6657 SHA-1: 666b7ccd69bdce9c2c4aefcd076a1aeb5ba25a81 SHA-256: c5d778b3a559f0a71ca652ed5c902b5a0903aa65d6691ea72ae46ba3a83c73da
132 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/strik?keyword=mac+security+update+2020-003 In PDF document text
    • https://vupubajuxik.weebly.com/uploads/1/3/4/4/134492473/6394388.pdfIn PDF document text
    • https://radutarogo.weebly.com/uploads/1/3/4/3/134379411/4927585.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/gafugelu-zokusonozov-xoxipijizomizif-fiwomazuwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f8723528b9f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369796/normal_5f8c7229266a2.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/nugoludutixas-muneguged-xuroxulape.pdfIn PDF document text
    • https://vifesomojijafi.weebly.com/uploads/1/3/4/3/134337648/5d667ea8f10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421476/normal_5f9fbfb9b992b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392439/normal_5f8feef56ffa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_5f9c497f50208.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://uploads.strikinglycdn.com/files/20a88aca-acb0-4907-90f1-9093a5292303/pomaxok.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/meiosis_foldable_activity_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e41273f-229d-4405-b808-6ba16fbfbad8/2004_suzuki_ltz_400_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c8a5e86-4adb-4f54-bead-963a17cc3ad1/79545524644.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D2 3172 bytes
SHA-256: 91fc2c16cd6ac7c04615c2dc851461dcf92938042a23fe832fedc6380bce1707
font_01_sfnt_off00007f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1F 5280 bytes
SHA-256: 4e3487e570d528d535745a75308b0dcd71064ccdb9ff0ba9591a6cc0ecff1644
font_02_sfnt_off0000913a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x913A 11164 bytes
SHA-256: 5418ed307e37f0f1fb705e932d3ef09e366641b0cffeccc8aa02bdd2f1767ff7
font_03_sfnt_off0000b6fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6FC 16164 bytes
SHA-256: b21434860209bcfa4faa45743010641f853ea3cc1b0bad42541eb31f339e130c
font_04_sfnt_off0000cc1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC1B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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