Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00c010058ea5abe…

MALICIOUS

PDF

101.4 KB Created: 2021-02-26 03:48:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f488140239e39abc6286b11a75dcd411 SHA-1: 0e5b67a62f696baeef449e2ca7e364059c987415 SHA-256: f00c010058ea5abe33f48a8f8010c5d8265dd689c536b9737434a05edbfe4b7a
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting services, characteristic of a link farm used to distribute phishing content or malware. The presence of a URL with a 'utm_term' parameter suggests a targeted campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/strik?utm_term=line+6+spider+jam+75+watt+guitar+amplifier PDF link annotation
    • https://funemozivadomuz.weebly.com/uploads/1/3/1/3/131398429/pimajulipuvux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370278/normal_5ff0062fdce33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377931/normal_5fd78422c00e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381287/normal_6027cc012ae11.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/blood_bowl_spp_level_up.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421781/normal_5fccd280db282.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402940/normal_5fd11365ddddb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484103/normal_600fd5a76c8e6.pdfIn PDF document text
    • http://dududuw.mypressonline.com/57176609687.pdfIn PDF document text
    • https://labimatejodo.weebly.com/uploads/1/3/2/3/132302966/1701666.pdfIn PDF document text
    • https://pevamuwewewi.weebly.com/uploads/1/3/4/6/134636281/6000316.pdfIn PDF document text
    • https://nipobajomofak.weebly.com/uploads/1/3/4/6/134641158/lesovorifiregun.pdfIn PDF document text
    • https://petugaxuw.weebly.com/uploads/1/3/5/3/135397026/vepiti_welapajipugiwar_najexiguwugubuz_marubazerexabut.pdfIn PDF document text
    • http://axecheat6.xyz/introduccion_al_derecho_abelardo_torre_libro8nyuw.pdfIn PDF document text
    • http://opros.xyz/advantium_120_control_panel_lockedvrwlx.pdfIn PDF document text
    • http://3gusevshop.website/concepto_de_investigacion_cualitativa_y_cuantitativa26bob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446399/normal_60135a332da15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/how_to_automate_excel_reports_using_r.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/13074403385.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/xezuzojepidaxexuwijapa.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/36329309242.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_off00014e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E37 5828 bytes
SHA-256: cdac8d93dbef9f3869c45463d8ee3023e37c857526adfaff363ee5e7c050b63b
font_01_sfnt_off00016220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16220 10996 bytes
SHA-256: 502a1dae23e1aace5056be16186a6012288b421c4f2296b7ab6244ede5234f05