Malicious PDF — malware analysis report

Static analysis result for SHA-256 442f96c9f1b410e9…

MALICIOUS

PDF

60.6 KB Created: 2020-08-18 17:25:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83583934f0b990eb14cbb018e3eaf5a3 SHA-1: 9a90eed0ef76b73e4ca4e46cb6d3ecb6b4fe3298 SHA-256: 442f96c9f1b410e9f5ed4a8309392f78ec6a5e67cedd3eb8a5c3801d87210a45
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify. This suggests a phishing or malicious redirection attempt.

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.cc/pify?keyword=atletismo+pruebas+de+pista+y+campo+pdf In PDF document text
    • http://files.matadorsurfboards.com/uploads/1/3/1/4/131437293/018ac5f.pdfIn PDF document text
    • http://zipagaz.peanutbutterandjoey.com/uploads/1/3/1/6/131607000/2283079.pdfIn PDF document text
    • http://xenidales.m-opanthers.org/uploads/1/3/1/6/131637136/551327.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/1/0429/4829/6863/files/robert_plant_sea_of_love.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6332/7385/files/lubimivofakerivokenis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/riximuburazofefop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1723/0741/files/kiwirosetuxujem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2724/2914/files/all_direct_expenses_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/alaska_cruise_packing_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/88786676680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/12142160738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5877/3662/files/43773665830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/75337706802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9417/8982/files/melufixisabizudodojesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1070/3012/files/bevosogusuvesoxudolijex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6279/6186/files/free_templates_wordpress_web_design.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9678 5532 bytes
SHA-256: fb1711c403db7ac6267fe52706d90c63ecf03d8fe7652f70ce03dea1b06c7168
font_01_sfnt_off0000a92a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA92A 11688 bytes
SHA-256: 264208638f2f30812d34c7a0b3fa292888a34b79714f6c956c5cd80ad2a864c7
font_02_sfnt_off0000ce44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE44 16852 bytes
SHA-256: 398d0293f07f01909986490cc80f99f666f5a84bae3c434fb650dba2a879b9c6