Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf4283950e274a7…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 03:26:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4754979b0157b0f8963430b7fe67cfbb SHA-1: 174b1eb01f288e1a118355979fcda4983eac0368 SHA-256: 3bf4283950e274a73f73e1ce4a9efda62912fc83253997352fe56d1a9477c79a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, many of which point to suspicious or unknown domains, and one specifically to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Forge of Empires' and a URL that matches the malicious redirector, indicating a lure to a malicious site. The presence of a link farm heuristic further supports the malicious intent of directing users to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.ru/pify?keyword=forge+of+empires+guide+bronze+age In PDF document text
    • http://nerazuked.taylorreportingsolutions.com/uploads/1/3/0/8/130874493/1636652.pdfIn PDF document text
    • http://bagize.mswalton.com/uploads/1/3/1/0/131070710/mutanasedij.pdfIn PDF document text
    • http://files.hourofgrace.org/uploads/1/3/0/7/130776291/molusegofifev.pdfIn PDF document text
    • http://files.dipvac.org/uploads/1/3/1/4/131453494/juzepenufiji_jisodawep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2796/9686/files/dakejimefekulorewubewezas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/kulusabutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/5196428419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7043/0115/files/ex-_cell_pressure_washer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2786/4469/files/stress_and_intonation_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/visut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2500/6497/files/xefikufuk.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 2

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_off00006738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 5476 bytes
SHA-256: 63af4b7c8c704bb799e02eb9be3ccc34ee4f4567aacacc1bae5870110684853f
font_01_sfnt_off000079c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C5 10544 bytes
SHA-256: 9e566f072fbbaee48e3442d7b2caa006dc4f9b2915163f83be484aa3b43b18c4

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