Malicious PDF — malware analysis report

Static analysis result for SHA-256 9866ef15288713bc…

MALICIOUS

PDF

40.8 KB Created: 2020-08-21 22:20:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 941077fcb8a8e8e8a4b63cb0898538de SHA-1: 41d5ad1e08f254a3bc9e8b0ec063ae85162fa3bb SHA-256: 9866ef15288713bcab13b5039cadcc724a9aabc55003d524947443c730efd141
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=informatieplicht+energiebesparing+activiteitenbesluit, which is likely used to deliver a secondary payload or phish for credentials. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on Shopify, suggesting a coordinated effort to distribute 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.cc/pify?keyword=informatieplicht+energiebesparing+activiteitenbesluit In PDF document text
    • http://files.oregonfmc.org/uploads/1/3/0/7/130739143/narulokujiv_supozutinona.pdfIn PDF document text
    • http://files.harmonychorale.org/uploads/1/3/1/6/131606563/3172315.pdfIn PDF document text
    • http://files.marinamaxwellauthor.com/uploads/1/3/0/7/130776855/perivavojivaw.pdfIn PDF document text
    • http://files.sdaspay.com/uploads/1/3/2/6/132681823/9497638.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/1/0431/7757/4557/files/41591582807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6422/0055/files/gabisanoxogowunululaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/dovetogovim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4192/2982/files/jopifirezomemitoziwaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/wow_iron_ore_farming_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/xefomavarabikuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/95567936882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1272/2585/files/2020_world_cup_bracket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1817/4120/files/75500899322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5024/5028/files/felomasujuzowoxokugesagi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CB 5568 bytes
SHA-256: 3b4614f7cd7c185dd9347f802c30de145ae6b1736507d0b2cc8957a0665aa1ca
font_01_sfnt_off00007487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7487 9960 bytes
SHA-256: e8b7b791393bcd1250040bb015668afc4fb713d11946a3ea27e4d5201e60b29a

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