Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fde40f2e82b5002…

MALICIOUS

PDF

37.3 KB Created: 2020-08-21 19:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 464a09648c627ac5ce72400b57f01a74 SHA-1: 5c627ab83891d63b5cef2a1d6d961d04fe50ba00 SHA-256: 4fde40f2e82b500257ba9f443a865535458d22c87a7f48f50c5450765cffb292
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as sheet music. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely as part of a link farm to improve search engine ranking for malicious content. The primary malicious link is https://ttraff.com/pify?keyword=lully+lullay+sheet+music, which is presented to the user.

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=lully+lullay+sheet+music In PDF document text
    • http://files.argumentationtoolkit.org/uploads/1/3/0/7/130739396/xoruboj-xutodin.pdfIn PDF document text
    • http://files.just-abit-off.com/uploads/1/3/0/7/130775607/desomo.pdfIn PDF document text
    • http://pasifaga.understandingfantasybaseball.com/uploads/1/3/1/1/131164250/nubixu.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/1/0435/7550/9155/files/gosilofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/vavaxegujuxenepepatav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/75069646126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8067/8564/files/affirmative_negative_interrogative.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/roman_catholic_bible_tagalog_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/github_gist_api.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/best_company_profile_presentation_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/61671208369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4787/0876/files/vorizeravigamixapomozufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/daraxagulexidetipaxuban.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 5

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_off000055e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55E4 4984 bytes
SHA-256: d80c81d52d1b9801f72a807a9a17310333ce77e691bb3dfbae400062a0342d7c
font_01_sfnt_off000066b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B8 9904 bytes
SHA-256: 32538048d41f86eada788abee0fcf102c3c8ccd1f54bc204cafe4a3a55cd3b7a

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