Malicious PDF — malware analysis report

Static analysis result for SHA-256 da561e52fee8e4a4…

MALICIOUS

PDF

46.3 KB Created: 2020-07-26 19:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6af5170a3db59283b40cc9b4803888cd SHA-1: 62a39c999b9f36714e26b13d66e4e552106a5a65 SHA-256: da561e52fee8e4a4d13f9748a9fa28c8920b938bd98bc78c093a1a21457dd702
194 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure, disguised as a wallpaper download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates a direct link to a known malicious redirector, while PDF_SEO_LINK_FARM highlights the technique of using numerous links to obscure the malicious intent. The document body, though heavily obfuscated, contains keywords related to 'wallpaper' and the authoring application, suggesting 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.ru/pify?keyword=bhagat+singh+wallpaper++free In PDF document text
    • http://files.lambersfisher.com/uploads/1/3/0/9/130969632/8860172.pdfIn PDF document text
    • http://files.vitaemovimento.com/uploads/1/3/0/7/130775231/7708622.pdfIn PDF document text
    • http://files.summitcprtraining.com/uploads/1/3/2/7/132712603/1664545.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/1/0428/9835/8432/files/94662163826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/75328670504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/vajedosadirerazodode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0397/7634/files/9439409098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7886/7354/files/wonum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/vamezatoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/jadarexodomigexalajew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/vukojonejoworotixot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9841/files/58923898338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/61877237876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2008/3612/files/72578804957.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000701e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701E 4984 bytes
SHA-256: 572e00ba74f927beb85bc5b9470144a9e5df1df9a2156f6a30fc65a5bfb6ec0c
font_01_sfnt_off0000810a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810A 1728 bytes
SHA-256: 8a7fef30536efc43730865987e3b75d47a259a08003b22921e980fc4baa691d2
font_02_sfnt_off000089a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A4 9984 bytes
SHA-256: 95775f16d706daa19ce256cca6ae8701b73b72cb41cf3ebc9fe64780ab5ed065

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