Malicious PDF — malware analysis report

Static analysis result for SHA-256 d016ed6d9914dfcf…

MALICIOUS

PDF

61.7 KB Created: 2020-07-28 08:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0e61dfc36c6ede757b2912b76974099 SHA-1: 658e9a620f7e22b551f96351ffcd660753db46d0 SHA-256: d016ed6d9914dfcf9653a81795ad3c880f79f549876cf594222ac801751b8daa
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to SEO link farms and potentially malicious sites. The embedded URL and the document body text, though obfuscated, suggest a lure related to course information. The ML classifier strongly supports the malicious verdict.

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=c.+a+foundation+course+information In PDF document text
    • http://files.pinkbehindthethinblueline.org/uploads/1/3/1/0/131070149/4407690.pdfIn PDF document text
    • http://files.wifespiration.com/uploads/1/3/1/0/131070992/14dd5ac841.pdfIn PDF document text
    • http://files.azioshsfi.org/uploads/1/3/0/8/130813714/9161358dadd53.pdfIn PDF document text
    • http://files.solretapsychicreadings.com/uploads/1/3/1/3/131398555/3343533.pdfIn PDF document text
    • http://files.ridingrubber.com.au/uploads/1/3/1/8/131856331/406ec1.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/1/0431/5817/5906/files/39966886002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1162/files/bezinubutijogajituge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/526428265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/9695068876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/17300905333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6231/3639/files/71676142599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/buzutitofajosamavawoviza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/rixokux.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

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_off00009e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E30 5072 bytes
SHA-256: aa9d92b9d8352d9e0c8b215209fdcfe6c3f413a1780a64868d2a05ae963cc8b4
font_01_sfnt_off0000af5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF5E 10760 bytes
SHA-256: a5aa02bc57c27d7909ec930bc50bccb6ab68398ff6688d66052b1cad62fa449e
font_02_sfnt_off0000d41e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41E 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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