Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc6f23b78e2b081…

MALICIOUS

PDF

84.7 KB Created: 2021-03-29 12:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c43bae8f61ff88c08c035248cadf28c4 SHA-1: 87890c1c35a8638bd8f69cb8c68fdf0e08328eb9 SHA-256: 9cc6f23b78e2b08177c046af6dfd654252157ff41e18a9aca3d94a96c34f2883
244 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to disposable hosting or known malicious redirectors. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the heuristic firings suggest the document's primary purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://dafemum.ru/123?utm_term=warp+stabilizer+premiere+pro+cc+2015 In PDF document text
    • http://wozovumorawoka.sportsontheweb.net/57442489504.pdfIn PDF document text
    • http://luminar4-download.xyz/how_to_show_data_table_in_chart_excelil036.pdfIn PDF document text
    • http://xenejesujotolud.mypressonline.com/perbedaan_luka_antemortem_dan_postmortem.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/UOjjU2u/vologoponi.pdfIn PDF document text
    • http://klosheff.xyz/97488133411sedhu.pdfIn PDF document text
    • https://cdn.sqhk.co/jogibigeda/XjajhQY/ketoxona.pdfIn PDF document text
    • https://cdn.sqhk.co/digipexula/ijhJVje/how_do_you_draw_gacha_life_hair.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1bb66ad-9019-407d-8596-013dae1523f7/56844652065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2bffff6-0c90-4933-a163-6c6edc9c4b17/52452224402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca70cdc7-3614-4b12-b4b0-99f8fd52f9d7/wevuxobakafoz.pdfIn PDF document text
    • https://e1cd7dcf-8988-4be8-9b1a-722367337987.filesusr.com/ugd/6203b9_b58cbb5225ae4d38a8dc08457b9e02db.pdf?index=trueIn PDF document text
    • https://023e3b0e-89aa-4e00-bd19-175c11a0a9c0.filesusr.com/ugd/5f4883_0f142fc742934a3196f8a67260236885.pdf?index=trueIn PDF document text
    • http://kamigawox.atwebpages.com/mathematics_project_models.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9503b52b-2241-42dc-b788-a0806ccd444a/toro_lawn_mower_model_20339_spark_plug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1f5b934-6c61-4171-bb0d-a64f32372805/26369259749.pdfIn PDF document text
    • https://ec451167-49e0-489e-a150-d7dc0ecf9264.filesusr.com/ugd/fe0276_ebc9052a03a94209a8a18839bf93adf1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f5a6a8e-2cce-4cd7-ac33-8a829dcdf132/69025593037.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://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED98 5732 bytes
SHA-256: e38bfe3a47ed12c3c99068ca1d7160f897541ba7d44e3b452010751c2b5308dc
font_01_sfnt_off00010124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10124 20968 bytes
SHA-256: 25d2fbfb5dd46bce752f1a10cbb8fe29a5ece10bd9e4a33cfa5ea6c363d8700b
font_02_sfnt_off0001215c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1215C 10596 bytes
SHA-256: c0774f01e902de6779910aae8a975b434fc210b6cf0c182caaf0883f3300b45d