Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb54e637ee9eea08…

MALICIOUS

PDF

52.1 KB Created: 2020-08-01 03:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd327f502f686b83fdb877e9ff0259c0 SHA-1: aee5ad61813f52ecb5d471e42d54101d27b15e95 SHA-256: bb54e637ee9eea08bb083a142e37b34aa08a7481f55d9a785425d09e7051a1b6
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a significant number of embedded links, many pointing to external PDF files. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=what+does+silk+touch+do+in+minecraft'. The presence of a large link farm hosted on domains like cdn.shopify.com suggests an attempt to manipulate search engine results or distribute further 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.ru/pify?keyword=what+does+silk+touch+do+in+minecraft In PDF document text
    • http://files.twinklenelson.com/uploads/1/3/1/8/131871433/nazeturazalijati.pdfIn PDF document text
    • http://files.biozapplabs.com/uploads/1/3/1/3/131379231/92be176bcae.pdfIn PDF document text
    • http://files.martialartsmarin.com/uploads/1/3/1/6/131606295/momiratu.pdfIn PDF document text
    • http://files.keepinitreelchartersunlimited.com/uploads/1/3/2/8/132814996/makos.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/1/0431/7960/6176/files/wifajimipifedimegimepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/sumanunulanububara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/vikamulaxozokotufebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/67083795343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/vapufunamajujizudubefuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/lopepewitekavod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/8569338181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1642/7419/files/29552318960.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 6

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_off00008e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E59 5340 bytes
SHA-256: 414f4013b7dc8c23dc5c8485ba7729bdffcf110c5ec147ec29d22bd35b495254
font_01_sfnt_off0000a062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA062 10388 bytes
SHA-256: b20970b0cb1996eb03d960690bc07e7d0fd24721b9e54a51db3c52a9ed0c9ead

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