Malicious PDF — malware analysis report

Static analysis result for SHA-256 15919739664ebf5c…

MALICIOUS

PDF

48.5 KB Created: 2020-08-21 12:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 254adc0312c3eaa65e34d7891ce39af1 SHA-1: 86604cd8a095dd5f009e32f5e007b47b45c2d0ca SHA-256: 15919739664ebf5c5b01c9e7dbfc4e1a541388673b2158c2b01957d7a28567fd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the primary purpose is to redirect users to a malicious site, likely for phishing or malware distribution.

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=linear+guide+rail+3d+printer In PDF document text
    • http://files.larimarjewelsandthings.com/uploads/1/3/1/3/131398323/8dee328668e.pdfIn PDF document text
    • http://files.kalletciviccenter.org/uploads/1/3/2/8/132815054/1553603.pdfIn PDF document text
    • http://files.worldofsong.com/uploads/1/3/0/7/130776607/5210395.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/1/0427/9166/5830/files/9353471367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3636/9318/files/57326831530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/5800/4895/files/bozawisawumujibibukotuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1632/1184/files/83176894144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/34520386038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1470/1735/files/jquery_defer_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/dafofurijupuramo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3127/2346/files/zupepekinukasasonopip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1353/7951/files/example_of_euphemism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2258/1923/files/tisokilid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/nivolinomamudumodeduxelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/ritudixaferoboridanobeved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/fonigulizoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/54563564938.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_off00007f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F11 5052 bytes
SHA-256: 703660bcdb8ef217ccaae204479b4fd14f97157f4a4cdf7de17b7b94cdc6a1c0
font_01_sfnt_off0000904b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x904B 10668 bytes
SHA-256: 864d93b0f989f076fc5e113db0f4c69e2d8e624576191cd929cf14c76d2cf866

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