Malicious PDF — malware analysis report

Static analysis result for SHA-256 da44308edbed1c58…

MALICIOUS

PDF

72.6 KB Created: 2021-02-26 05:54:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 1817c9bd9106280be5943ce9ecad797c SHA-1: b83776cb8d3f2c13d1d07ee2e588bc2e74ee411f SHA-256: da44308edbed1c58c0c6069dd805c6a4a877271cca93983063f9b977fa42967e
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains a significant number of external links, many hosted on disposable domains, indicating a link farm or phishing attempt. The embedded URLs suggest an attempt to redirect users to potentially malicious content, likely for SEO manipulation or to host further malicious payloads.

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
  • 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://maypoin.ru/award?keyword=what+are+the+symptoms+of+a+bad+injector+pump PDF link annotation
    • https://lefiletigej.weebly.com/uploads/1/3/4/5/134597596/delubob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445125/normal_6029525a41446.pdfIn PDF document text
    • http://fb-ig-copyright.com/gallistel_ellis_sample_report6ycss.pdfIn PDF document text
    • http://mishgen.com/kannada_love_feeling_songs_pleasegdy7h.pdfIn PDF document text
    • https://zanefasijim.weebly.com/uploads/1/3/5/9/135965469/5043076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484365/normal_5fd6463b031fd.pdfIn PDF document text
    • https://bipufufutugudov.weebly.com/uploads/1/3/1/1/131164095/3983803.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414502/normal_5feb72ffe716b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460963/normal_6033faa4cdf26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_6036ae30321fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453100/normal_60275540abf74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_6036c1f6104c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409118/normal_60159aa3ea739.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379742/normal_6027bad83887c.pdfIn PDF document text
    • http://startbastar.online/acellus_easy_sign_inergsw.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/rubidokezive/dell_optiplex_790_sff_desktop_pc_-_intel_core_i7-2600.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e09b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09B 5696 bytes
SHA-256: 6fd6dba8320b003027078b96a3d43a9064370d452022ad99d9f5b9e7737b2c7d
font_01_sfnt_off0000f3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E3 9696 bytes
SHA-256: 32605ecc57b9f15491b8d37c58e5bad4985aaa7a861fe58261e1da03be4b13ee

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