Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a3cf16e257516f…

MALICIOUS

PDF

49.7 KB Created: 2020-08-28 16:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb2af100410777383d075f707f73257b SHA-1: fd4dd6aab623fd101f0409a398c30436734f3449 SHA-256: 06a3cf16e257516ff23947a14597d2021ae7a28468d0754d3a16dfec268f1be3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to an SEO redirector that ultimately leads to malicious infrastructure. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL confirms a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded links are designed to trick users into visiting harmful sites.

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.com/pify?keyword=tipos+de+eslabones+mecanismos In PDF document text
    • http://files.eunhongkang.com/uploads/1/3/1/4/131407148/lewimulil-makusi-zomaxud.pdfIn PDF document text
    • http://files.southcentraldallasbpwc.com/uploads/1/3/0/8/130813409/846043.pdfIn PDF document text
    • http://files.windsweptgoods.com/uploads/1/3/0/9/130968926/mowinubavaket.pdfIn PDF document text
    • http://files.dawnsgoddessdiaries.com/uploads/1/3/1/4/131453934/f1e9f.pdfIn PDF document text
    • http://files.andreaclarkend.com/uploads/1/3/0/8/130814636/zobul_gajupisix.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://cdn.shopify.com/s/files/1/0432/2348/2535/files/apa_style_research_paper_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/87984400274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0283/0745/files/casio_dlp_projector_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3258/8966/files/altium_designer_17_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/livros_sobre_alimentao_saudavel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/57697506620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9347/3947/files/37088823487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7183/9135/files/decimal_worksheet_for_class_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4209/3728/files/nuroputapediniputuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9242/7430/files/3834580768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/110481060.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_off00007590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7590 4920 bytes
SHA-256: 1c7533004ebce2a37d859791a1c371cb07c8f36e3bd761069a14ac251a3a1b3d
font_01_sfnt_off0000861a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861A 11364 bytes
SHA-256: cd6deb310344990424c4fa67b0f7ffbf6ed877ada72e5f63f12e2a29fd207f2c
font_02_sfnt_off0000aa3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA3F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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