Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3c49ad9cd8eafda…

MALICIOUS

PDF

83.1 KB Created: 2021-04-05 16:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 237116529f906048a3771a00e9ca4a0b SHA-1: d28ae716389657a454777fa2af626b79d53f9e07 SHA-256: d3c49ad9cd8eafdae0be48aa71be9da5d1578d32937509513338222e91192665
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing attempt. ClamAV detection and ML classification strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/wix?keyword=pico+tts+apkpure PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392218/normal_5fcd7582ca468.pdfIn PDF document text
    • http://geloritiveda.mygamesonline.org/97104330545.pdfIn PDF document text
    • http://sumigemag.mywebcommunity.org/bifilar_pendulum_experiment.pdfIn PDF document text
    • http://bigezidara.mypressonline.com/kejibetabinol.pdfIn PDF document text
    • http://topukovatawosu.sportsontheweb.net/kusegumozedezotume.pdfIn PDF document text
    • http://sebekeruxa.iblogger.org/figoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374848/normal_5ffcd96fca1a0.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/72a58ddb-0399-4ce2-8197-48367622a01e/46118478365.pdfIn PDF document text
    • https://a98f38e8-5810-4fc9-be6a-c3d78c7c4f9f.filesusr.com/ugd/921909_9b1e1c90e95b49ffbeb0d1024579d998.pdf?index=trueIn PDF document text
    • https://64f1e6a9-4530-4009-9f9b-67b91dd69f79.filesusr.com/ugd/76b6de_fe14e49a7dc442f6addbc83b93ffda22.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/13cff752-4305-4020-b96e-98a89fd4f3f2/your_first_year_in_network_marketing_audiobook.pdfIn PDF document text
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_f6cb7c76a4fd4061942b70b658c6e1e5.pdf?index=trueIn PDF document text
    • https://a9f3490c-def6-45ea-9957-aefa341d54bd.filesusr.com/ugd/84b587_b64e3168e7e34c7ea4c905956befde2e.pdf?index=trueIn PDF document text
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_72dd892466d243a9a791164ca5865681.pdf?index=trueIn PDF document text
    • http://fabavokawibawo.epizy.com/chemistry_formula_for_iit_jee.pdfIn PDF document text
    • https://6d5fec37-5936-4ae8-8938-03a86e982f09.filesusr.com/ugd/d4da64_3b72db88ee8f4a03a952f84a193de833.pdf?index=trueIn PDF document text
    • https://48e6b720-b653-4920-beb0-7ef171ab6ab9.filesusr.com/ugd/d9d1f5_7940f240e9f94279bfb5d09bad957f7d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b0252fa-fa58-4f12-8f16-e97dd3ad56b7/voxewexadusituf.pdfIn PDF document text
    • http://dasopikabuma.rf.gd/campbell_biology_10th_edition_ebook_download.pdfIn PDF document text
    • http://nojutunaraxo.rf.gd/capillary_electrophoresis_applications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/521c9279-a731-4c3c-8766-e1c4c856e902/how_to_take_off_glacier_bay_shower_handle.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25C 3820 bytes
SHA-256: e0924c286ebd2f03115b777ff3cdaf8b21ef147258d7ff583def99c1e8b8c005
font_01_sfnt_off0000eff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF6 4960 bytes
SHA-256: 49b6021b6dc18358e23e1950854d103e0ce34a24d27a3649c1eeff7082efc952
font_02_sfnt_off000100ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EF 11028 bytes
SHA-256: 8e8fac8048ddf586ecb09420bd60acc46c592e52cfcb71cdd835d5d9cb8a1087
font_03_sfnt_off000126cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CB 16468 bytes
SHA-256: cfcd05a0c4c29650fb289d3b9d3ed26e082e8f5a1b5b712b0509a6c70894056a