Malicious PDF — malware analysis report

Static analysis result for SHA-256 f259d054ebd215d3…

MALICIOUS

PDF

55.3 KB Created: 2020-08-18 19:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e375a449103be89075a3a5333a32a0a SHA-1: d04839224ff2d371cb3d83494378564c1ca3d6bc SHA-256: f259d054ebd215d3935bba18d6b7b175a46b371513e93cc6b0f108774d65b738
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a link farm designed to appear as legitimate content, with the primary malicious link leading to a redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL is associated with malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL and references to 'storyboard template for elearning', suggesting a lure to disguise the malicious intent. The presence of numerous other PDF links, as flagged by PDF_SEO_LINK_FARM, further supports a link-farming or redirection scheme.

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=storyboard+template+for+elearning In PDF document text
    • http://files.jessicamiyuki.com/uploads/1/3/1/0/131070112/be4ebc69.pdfIn PDF document text
    • http://files.bestfightclub.com/uploads/1/3/1/4/131407552/luzemikigixozokapan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9279/4774/files/68818845941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6292/7263/files/www._protectmyid._com_premera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5544/7201/files/2020_calendar_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/24130517091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/28019992825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0432/9125/files/48370970535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/0373/4184/files/list_of_international_airport_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3732/5472/files/89801596505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8583/7989/files/easy_ketogenic_meal_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5251/2918/files/13828838860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6382/0959/files/pudurijunasavi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B94 5316 bytes
SHA-256: 5b2999e7e01fca048d9b2e4b64b7a092b7b6d5a637ac78a5ef799b9bef5a41ec
font_01_sfnt_off00009d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D8A 10648 bytes
SHA-256: 8394eac41a28e470514cc2b5b568b9f7f8ca7f86e32549f241fa4034af5cac4f
font_02_sfnt_off0000c1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D0 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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