Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc0252196aae9d3…

MALICIOUS

PDF

91.8 KB Created: 2021-03-30 10:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 75f417a7c93824dd8f6c7d42e1ff5925 SHA-1: 820dbed793b27c8a915ac7ee0e22c82b6dc49049 SHA-256: edc0252196aae9d368a140179be194bf3a502e26a67439882bf92e867d7990d8
186 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, with heuristics indicating a 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM'. One of the primary links points to 'http://pemegira.22web.org/52202707698.pdf', and another to 'https://ponafet.ru/123?utm_term=argumentative+essay+phrases+pdf'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://ponafet.ru/123?utm_term=argumentative+essay+phrases+pdf PDF link annotation
    • http://pemegira.22web.org/52202707698.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486215/normal_5fc8c82ee24dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462038/normal_60249c45d204e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450728/normal_5ff5720826db3.pdfIn PDF document text
    • http://retapadu.medianewsonline.com/universidad_del_tolima_sede_tunal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/101f684b-f662-4b90-84bd-073a083fa9ac/pentair_superflo_parts.pdfIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_ee7a870b14624b35948ff031ba3278dc.pdf?index=trueIn PDF document text
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_72f8e5926f2846e5923daa8a8d324faf.pdf?index=trueIn PDF document text
    • http://jelunegizubu.atwebpages.com/air_pollution_effects_on_animals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c942600e-cdc5-4cc0-979b-dd8d2ff1a9e9/madame_bovary_window_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c391828-b5e8-45fd-b5ec-1a7ee77601b9/heil_hvac_parts_near_me.pdfIn PDF document text
    • https://4253c66a-660d-4c83-b31d-f715833d547b.filesusr.com/ugd/d9e9a0_c95be2cbfa2645b8aa942acdf727b4d3.pdf?index=trueIn PDF document text
    • https://2a1457bb-a4d2-449b-8914-d784a503a6da.filesusr.com/ugd/c0fca2_9a46374fa10846fc9d643ca3c012792f.pdf?index=trueIn PDF document text
    • https://f39f7cea-6337-46de-af4f-699959e6db0a.filesusr.com/ugd/004672_9f1c93f2f9914c18a407a02bdc17b305.pdf?index=trueIn PDF document text
    • http://wizomatuzepa.rf.gd/kososapuzopaloxirenotav.pdfIn PDF document text
    • https://c30b87d5-e38e-4f4c-8f61-e356d9eaafe8.filesusr.com/ugd/347120_e8eed8fa408d49adb958da2f1f41b7bd.pdf?index=trueIn 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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11799 5572 bytes
SHA-256: 7e5fb34978c28943316cb4aa077fe5ffcc8a9f6737efcbae45b7624614ce96d1
font_01_sfnt_off00012a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A69 6524 bytes
SHA-256: 96cedaea2146d1a137d3e2c79600fe668aa3b14dde198a1f28c9f78ece9ed829
font_02_sfnt_off00013b8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B8B 11088 bytes
SHA-256: b549aa758043a19d7ed1c8fdb87749c42c336f619b05640a2458068753b220d8