Malicious PDF — malware analysis report

Static analysis result for SHA-256 176036612cb82a65…

MALICIOUS

PDF

38.3 KB Created: 2020-08-19 18:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c3468982e8d34dcaf309997d63436b6 SHA-1: 59abe2a5f031f9c79d026e18aa2e69b40666538d SHA-256: 176036612cb82a65a01d6cc72212f0f66b9e060bc38885f31817865bbc102ad6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains a URL that appears to be a lure for free sheet music, likely intended to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

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=popular+piano+duet+sheet+music+free In PDF document text
    • http://xuxole.nenevalleydragons.org/uploads/1/3/1/4/131407089/6522637.pdfIn PDF document text
    • http://files.fraserlegendsfishing.com/uploads/1/3/1/4/131483305/vebodavu.pdfIn PDF document text
    • http://files.elyriadev-center.com/uploads/1/3/1/4/131406149/wurupedivu.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/1/0431/1384/0794/files/81733925903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7027/3174/files/89424225968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/63716303735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/13480778634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2434/5244/files/bajrangi_film_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/lipokufedepar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/tupirosagunopiwedelerora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/88447026492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/amazing_bible_timeline_with_world_history.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 6

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_off0000589e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589E 5396 bytes
SHA-256: 17bdf051bf1cef0c13d2789c43b0d7e4497feb4be8f19bf3e6470c93d596809c
font_01_sfnt_off00006ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC1 9920 bytes
SHA-256: 295c1ff1df599da258f6f7cdc020a7d15b215ea22499852b781474bdbd82c35d

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