Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4c6fb2c789129c8…

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 22:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 454ef13c0c01157b1288e7484aa7c604 SHA-1: 750a619aed902f66b566f88c05cf311de762a1e8 SHA-256: b4c6fb2c789129c890447fdc943584aabf2009599906c89e9c551c3a15f02185
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=can+satellite%2528+cansat+design+manual'. While many links point to benign Shopify domains, the presence of the malicious redirector indicates a malicious intent to lure users to potentially harmful 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.ru/pify?keyword=can+satellite%2528+cansat+design+manual In PDF document text
    • http://xodusewot.kv-cleaningservices-uk.org/uploads/1/3/1/3/131398504/gipekowojopi.pdfIn PDF document text
    • http://files.carlosvouking.com/uploads/1/3/1/4/131453086/522437.pdfIn PDF document text
    • http://files.appalachianbreastfeedingnetwork.org/uploads/1/3/1/1/131164054/guzes.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/1/0448/1895/6449/files/cessna_152_instrument_panel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6083/9078/files/castrol_edge_professional_5w40.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/46790823988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7786/5367/files/asset_integrity_management_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/gree_mini_split_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6809/4629/files/66731684237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/infrastructure_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9484/1246/files/geometric_construction_drawing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/9053009873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/catalogo_avon_17.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 1

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_off00006746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6746 5144 bytes
SHA-256: 3be17636ad13a723e566c82b0f2fbf26f792344f05e6f6a58b49d5e6b3f2f712
font_01_sfnt_off000078c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C1 9996 bytes
SHA-256: 78b3825024c1aa5b6d5dfbff3148907eb3de108d039cee3795bd5dec854b4638

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