Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c02217a3aebea2…

MALICIOUS

PDF

55.6 KB Created: 2020-08-18 17:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed0a9ba6ae5ac71142524a58d51504b6 SHA-1: 80aec8ce19ba3640c95fcd8fcc84087d7cf147e3 SHA-256: c9c02217a3aebea20b70121598fe17eff27fb418c31eb9cdd9b7c02feec7873c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=bethune+college+admission+2019+application+form', is designed to lure users to malicious infrastructure. The document also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=bethune+college+admission+2019+application+form In PDF document text
    • http://files.milehighed.org/uploads/1/3/1/6/131606111/zidak.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/1/0435/1547/8176/files/80572493644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/9475/5752/files/best_weight_loss_exercise_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/2658590753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1384/8731/files/juxazozozebamujulibanagux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0845/8905/files/wegozuwebamuminu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1929/5130/files/mozoxomenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9689/0785/files/vevijuporori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/lord_of_the_flies_litcharts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2579/9067/files/88820332633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/32719917757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/joraxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/12439241903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2881/4760/files/14497969327.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB4 5984 bytes
SHA-256: 94cdf79c5c92d217c9d528b179a87ed96fd19e0a4ab1d16c7362fd3e9d194bcc
font_01_sfnt_off00009ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EE5 10584 bytes
SHA-256: 96fb48cf10f429e52530de6419d57e5e919e8711f6f2220acd5019f3937be5db
font_02_sfnt_off0000c30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC30D 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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