Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b2295de2df4df4…

MALICIOUS

PDF

33.4 KB Created: 2020-08-03 11:30:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 864ac6f792398a7e486bdbf783f0ba27 SHA-1: c8e1a6e295f7a70255b9f1f5ddd9a316bce7642a SHA-256: d5b2295de2df4df4ead9f89525fcdd6d516d7bef7679ff0db9109da0e29b9d12
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Autumn leaves piano pdf free' and includes the primary malicious URL. This suggests a phishing or scam attempt designed to trick users into visiting a malicious site by appearing to offer a free PDF.

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=autumn+leaves+piano+pdf+free In PDF document text
    • http://files.leesteadmanwelding.fr/uploads/1/3/1/4/131406960/zoxekamubigot-xutunewi-daxetit.pdfIn PDF document text
    • http://files.lcloreporter.com/uploads/1/3/0/7/130775607/leviw_nakax_zagoduxukulazir_dizawa.pdfIn PDF document text
    • http://files.tiedyeharvest.com/uploads/1/3/2/6/132695242/xatojenigebufide.pdfIn PDF document text
    • http://xivov.makeih.co.uk/uploads/1/3/1/3/131380042/vejakagojej-fibiwirog-nodupal-jiregogotukimif.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/1/0433/7529/6670/files/xofate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/11516054511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/40153202518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6191/files/8308428156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1390/5311/files/mowuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/12810196971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9524/2392/files/pugutoraribuzikajibeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/bafitona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/netanoxurunorolov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/banesazowoxol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2247/3624/files/sogenas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3873/4496/files/nujirazubez.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 4

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_off00004508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4508 5236 bytes
SHA-256: 733073bca54950fb727feea75890fd462abd6ce7b4939da9869ddc41f0aacbb6
font_01_sfnt_off000056cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56CB 10040 bytes
SHA-256: 598fdfb3ffb9e177c1d129a48a19faa24019ba1b95730f9c5a3d514fe84ae38e

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