Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b73481f8486598…

MALICIOUS

PDF

36.3 KB Created: 2020-08-14 02:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebca9ad3595a90e46662ac1be2d3064e SHA-1: 68ea12e68a8886303e31db633b26d9206439c43f SHA-256: e2b73481f84865987edce82de0150849789d42bfc7a21123a2baf23be8edd040
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains text related to 'online banner template vector' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious 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.com/pify?keyword=online+banner+template+vector In PDF document text
    • http://files.4seasonsirrigationandlandscape.com/uploads/1/3/1/4/131453674/piwinewuvozida_sigoron_gozadedezijatuj.pdfIn PDF document text
    • http://files.bboybgirllifestyle.com/uploads/1/3/0/9/130969408/497358.pdfIn PDF document text
    • http://files.presbycast.com/uploads/1/3/1/4/131453695/8142428.pdfIn PDF document text
    • http://files.annapurnawellness.org/uploads/1/3/0/7/130738949/busebuwumeja.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/1/0430/7956/5465/files/remove_duplicate_data_in_array_golang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5817/5901/files/platform_shoes_goth_punk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/77228304588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/doxufofanezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/application_lifecycle_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4117/7248/files/rabebefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/texto_expositivo_argumentativo_caracteristicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/air_crack_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4875/4600/files/41849411974.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 3

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_off0000550e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550E 5128 bytes
SHA-256: 911e22790ff5c739b9615e911b303eb59c578aa5115a322290827af778a70af2
font_01_sfnt_off00006667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6667 8912 bytes
SHA-256: bb5e05cb8ae9e8e366308c2f861e6d4f85d7f38a5e6b09d963b265989714d05d

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