Malicious PDF — malware analysis report

Static analysis result for SHA-256 22aec0c42bc9272f…

MALICIOUS

PDF

32.4 KB Created: 2020-11-05 19:03:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ba2eec43a08787863d5f4e018bfcbe1b SHA-1: 77948adba0a896fd9a0786703c15d18fdd87375d SHA-256: 22aec0c42bc9272ffe31eb42f0f7f355c27c589307a329fafe1664f5eeba6b8a
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable hosting services, indicating a link farm designed to redirect users. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to lead the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit user trust by appearing as a manual to encourage link clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafftec.ru/123?keyword=atlas+copco+elektronikon+manual PDF link annotation
    • https://gisetokitalakak.weebly.com/uploads/1/3/4/6/134600310/3529031.pdfIn PDF document text
    • https://gemuvubakada.weebly.com/uploads/1/3/4/4/134494784/a2981b0f.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/5872110.pdfIn PDF document text
    • https://gojemafofapuvog.weebly.com/uploads/1/3/2/6/132681271/a0e20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454558/normal_5fa16b908c0f9.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/812221.pdfIn PDF document text
    • https://maxuvejalova.weebly.com/uploads/1/3/4/2/134265339/5524327.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/d2bc55f6-2569-4d25-9578-ac311ab18ad8/18414039993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fae9474-5176-4e47-9144-9ccc422089b6/25475189853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b027d3f-bd3d-4d92-92fe-7430918acc7d/voletatop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b575e473-70e3-446d-8bcd-d34e2c6705bb/80257886825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7dd331d-737e-43bd-a520-64e74e87c8b3/soldier_s_peak_dragon_age.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d698d9c6-9007-448b-bbeb-6f03d943e0c7/15746857540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2578/3713/files/supenavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/4849/0915/files/frida_kahlo_book.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_off000045c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45C0 5132 bytes
SHA-256: f4e23831f3f296158c79dc17a05e7f4185be69307fc7055efed4767bcd018662
font_01_sfnt_off00005726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5726 8720 bytes
SHA-256: 71a134a963ccac6c4fd2e0955cab6c36c4416098f468717113758b0fb7a16bf2

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