Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb6fcf26c07aeca…

MALICIOUS

PDF

48.2 KB Created: 2020-11-06 22:19:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b31cd02fd8fd1d1bd4f94a735f24a0d3 SHA-1: d0ec9b370175cfb2d5ef287af4c9c9c813f1dd44 SHA-256: 2fb6fcf26c07aecaab4cafcbdeed0c94e1d793c5302481955c3763e80aea3958
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 an embedded URL that is disguised as a search result for 'the impossible quiz answer key 19'. The ML classifier strongly flagged this PDF as malicious, and the embedded URL is the primary indicator of a potential phishing or malware distribution attempt. No scripts were extracted, but the presence of the malicious URL suggests a social engineering tactic to redirect the user to a potentially harmful site.

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://trafficel.ru/aws?keyword=the+impossible+quiz+answer+key+19 PDF link annotation
    • https://sebonegipuwi.weebly.com/uploads/1/3/4/1/134108682/3567053.pdfIn PDF document text
    • https://fumubesoxumus.weebly.com/uploads/1/3/4/4/134485348/7171942.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://juvibix.files.wordpress.com/2020/11/gabizagamumarokidatanum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ddb1029-f734-4362-bf31-daec0e46f61b/10325942788.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/cleanforce_1400_parts.pdfIn PDF document text
    • https://bajalafel.files.wordpress.com/2020/11/windows_10_user_guide_for_dummies.pdfIn PDF document text
    • https://dagovivebige.files.wordpress.com/2020/11/sekiro_ending_guide_spoiler_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec684470-04d6-43ee-bfec-94cbbce74954/murojezuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cf703a8-07b3-4833-82b2-da1e41fae138/25041397454.pdfIn PDF document text
    • https://tirosagumeta.files.wordpress.com/2020/11/12005768388.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEA 5592 bytes
SHA-256: c2fe8a7dd0f799b6e0aebd60c571d27c20a8260493a6b9453b810ea432399e33
font_01_sfnt_off000080d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D4 10900 bytes
SHA-256: d5a9deb20d150fd323b453a888a0ab809becf01a87bfad8891d71cc7bda8a8c6
font_02_sfnt_off0000a5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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