Malicious PDF — malware analysis report

Static analysis result for SHA-256 54139761dc46e9fb…

MALICIOUS

PDF

33.4 KB Created: 2020-08-22 23:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b3b28cdb2c1d68d77b6170fe2a02392 SHA-1: ea0b86505983430393ccb23834a0b42c3d2de548 SHA-256: 54139761dc46e9fb84b6b05775171e39aaf232dbe616a436fd2593ee39970070
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL 'https://ttraff.com/pify?keyword=kimimaro+theme+piano+sheet' and numerous other PDF links, suggesting a phishing or redirection attempt. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=kimimaro+theme+piano+sheet In PDF document text
    • http://files.nailandbeauty.co.nz/uploads/1/3/1/4/131453402/tefelisul.pdfIn PDF document text
    • http://xejaxu.foodlust.net/uploads/1/3/0/7/130775320/wajakagami-vadomujafuronod-wakas-fabipo.pdfIn PDF document text
    • http://darona.ephesians320ministries.org/uploads/1/3/0/8/130813747/kavuni_zabage.pdfIn PDF document text
    • http://files.devonportcomhouse.com/uploads/1/3/0/7/130739593/3e4331.pdfIn PDF document text
    • http://files.klasifiedco.com/uploads/1/3/1/6/131606000/6554575.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/1/0431/4421/6727/files/shorthold_tenancy_agreement_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9376/0931/files/job_interview_vocabulary_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6843/1265/files/35999454318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/93324823759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/20071286777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6926/6325/files/v20_rites_of_the_blood.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/printable_english_grammar_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/social_impact_of_globalization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0754/8326/files/wei_wu_wei.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/nibuwadopajuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8587/9713/files/guia_para_aprender_ingles_sozinho.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_off000047e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47E4 4996 bytes
SHA-256: 77ececfaaa4e291dc061958f71d2fd1f8ea5e2d2bc9a56b966866cf112ed172c
font_01_sfnt_off000058b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58B5 9332 bytes
SHA-256: 304cd75d2caf546bdf6b2cad6737de86ae1dbaa0ee47de00d98ae897082a5750

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