Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7821277c30c6e8d…

MALICIOUS

PDF

40.2 KB Created: 2020-08-11 18:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f7978a1301593ac298fdf1e20f4665a6 SHA-1: d35c4081bb1e9933018597fc389b1b1ce2b30263 SHA-256: e7821277c30c6e8d53831af4cd68789aeacab28e9ff7ddd7b279f8d34d85b919
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=company+brochure+sample+pdf', which is flagged as a malicious redirector. The presence of numerous external links, many pointing to Shopify domains, suggests a link farm tactic to obscure the ultimate destination.

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=company+brochure+sample+pdf In PDF document text
    • http://files.worldyouthpeaceforum.com/uploads/1/3/1/3/131380177/d09f12a6bbd5b7d.pdfIn PDF document text
    • http://files.jgsnj.org/uploads/1/3/2/6/132695644/2618064.pdfIn PDF document text
    • http://xitasupe.eleanorandevan.com/uploads/1/3/0/7/130776031/4134089.pdfIn PDF document text
    • http://mazesefa.katscleankitchen.com/uploads/1/3/1/6/131607062/raropusiwidarozanogo.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/1/0433/4324/9563/files/49173475463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9846/4665/files/medicine_ball_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/84076249695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2779/8944/files/roped.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/56264919310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/vorusigimasapug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1148/0472/files/derivative_formulas_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/region_based_segmentation_in_digital_image_processing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/mapa_carreteras_pais_vasco.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5235/8049/files/razer_naga_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/duxavaduwusigusovumavudog.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 7

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_off00005fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB9 5540 bytes
SHA-256: f5e493965514c4c23d69b214901429e9d0d7c4b0d1bd778f3b68cd2220dbcf1b
font_01_sfnt_off00007253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7253 9936 bytes
SHA-256: 802b3ca063463f5f3291a4bdfb335cce1a6767bdcdcb6e0dae7e8abdf5d8e667

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