Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1c809190448109…

MALICIOUS

PDF

75.8 KB Created: 2021-02-12 16:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 73a310b2a03a8c224913f4ac11d960ad SHA-1: 4da4450195561362e434bbef6995c7c519ae7a20 SHA-256: ec1c809190448109ff9832f4bfc1558bf4bc21e506348ce90a084c238377dfa2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with one pointing to 'baarspo.ru' flagged as a potential phishing or malware distribution site. Heuristics indicate the PDF is a link farm on disposable hosting, and ClamAV detection confirms it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/123?utm_term=elixir+storage+all+levels PDF link annotation
    • https://cdn.sqhk.co/xugosovemi/Yidigij/ball_drop_nyc_2020_live.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374954/normal_5fc7f490515eb.pdfIn PDF document text
    • https://tojemiwavujiguv.weebly.com/uploads/1/3/4/4/134468879/nikef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382413/normal_5fedec488fb23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410433/normal_5fdd46cf5171d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480387/normal_5fcf82ad4a9fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xerevim.epizy.com/depenozilaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/teamviewer_free_for_windows_8.pdfIn PDF document text
    • http://bisavosimirot.rf.gd/android_1_mod_games_hay_day.pdfIn PDF document text
    • http://gagolugumetuvo.epizy.com/kaleshwaram_project_details_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/acdsee_6._0_free_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/11369435299.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/28255034732.pdfIn PDF document text
    • http://kusegewamuzazod.epizy.com/kifizilabadisoda.pdfIn PDF document text
    • http://lebevinawefebo.rf.gd/buffalo_platform_sneakers_canada.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_off0000ede0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE0 4936 bytes
SHA-256: 14897217b41a14ec3f263612a6196d7a0c549044e4a7191e13fb7ac209b8874b
font_01_sfnt_off0000feca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFECA 10396 bytes
SHA-256: e2ff89bb5c708d6cb0089ebbeeabb1acaa672ce4afb2fb63f2c9f2ad92429016

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