Malicious PDF — malware analysis report

Static analysis result for SHA-256 4252f1fcff48b08c…

MALICIOUS

PDF

38.5 KB Created: 2020-08-11 06:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43989c69b552dc016b1abb559dd14658 SHA-1: 09851fbe45279b03fc8f5993288dd67258bcc34d SHA-256: 4252f1fcff48b08c3f8877621e3474323f96ce9bec3a7a2797d2d31e7fe5aa3e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). The document body, though heavily obfuscated, contains the text "Jazz ukulele tabs pdf" and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous links indicates a link farm SEO tactic, likely to obscure the malicious redirector. No scripts were extracted from this sample.

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=jazz+ukulele+tabs+pdf In PDF document text
    • http://files.bluehorizonmassage.com/uploads/1/3/1/8/131871864/bozemuvisexis.pdfIn PDF document text
    • http://files.stevesquires.org/uploads/1/3/0/9/130969714/tiviji.pdfIn PDF document text
    • http://files.ajgatespro.co.nz/uploads/1/3/2/6/132681452/172075f338.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/1/0428/9665/4489/files/rasugigigedizoxogibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1116/8663/files/laruzebujikakitozosofal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/xumufezijufuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5737/9488/files/81004487185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2153/1293/files/32534707018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/mavevuwog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9017/3349/files/workpro_quantum_9000_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1547/8176/files/xolazotitadut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/6670346874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/lofurekozipurojekap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/7950148495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8907/5099/files/modle_d_attestation_de_travail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/shakin_all_over_guitar_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/79490298846.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 2

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_off00005916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5916 5180 bytes
SHA-256: fe5f2a109215157110f4cc8ab733b60a0161b8c2b04ce1976747142f9aeaf8fa
font_01_sfnt_off00006acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACD 10060 bytes
SHA-256: 670d306bc58194bb5534f4ad81f17f00230cea7b332ebfb7e2f1889abd2cf3ab

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