Malicious PDF — malware analysis report

Static analysis result for SHA-256 3697d477248f0df4…

MALICIOUS

PDF

41.6 KB Created: 2020-08-25 00:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 863a1d595f94cf12c27253e8e08acb1f SHA-1: 1f131fa2019b5baa82d8082251d514caac80886a SHA-256: 3697d477248f0df41a75cbb1519a45c789c6f1db18f4c9f1f6ec2dad80ebbdab
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=annoying+alarm+clock+sound'. It also contains a PDF link farm heuristic, with numerous links to Shopify-hosted PDFs, one of which is 'https://cdn.shopify.com/s/files/1/0439/6200/7710/files/cbse_improvement_exam_marksheet_2019.pdf'. The document body contains text related to an alarm clock sound and the PDF creation tool, likely as part of a lure.

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.cc/pify?keyword=annoying+alarm+clock+sound In PDF document text
    • http://files.nameastarnasa.com/uploads/1/3/0/7/130740049/27ed9075e88.pdfIn PDF document text
    • http://fenusopek.mbwc.org/uploads/1/3/2/6/132695569/7187709.pdfIn PDF document text
    • http://files.fivetimesfamous.com/uploads/1/3/0/8/130813931/1bd6881d80.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/1/0439/6200/7710/files/cbse_improvement_exam_marksheet_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/8824/9757/files/clothes_washing_symbols_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/vosakup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/batemans_bay_cinema_movie_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/24541771731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/12722204982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/88390814976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/63086378712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/informacion_de_plantas_alimenticias_wikipedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6200/0806/files/salen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87294954422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1428/3686/files/vimisewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/waximoganelipejufefumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8993/6025/files/datawagunaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/wibisajepovuj.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_off000064c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C1 5416 bytes
SHA-256: 97aee2f84fa9bddf3231a3e9cce0972839ca5e6b88f67001a42416d44c504509
font_01_sfnt_off00007716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7716 10064 bytes
SHA-256: 2a790e3e00a8840529ca268f7d604edc9defc433b1ce6ef549b881a35fcf621b

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