Malicious PDF — malware analysis report

Static analysis result for SHA-256 f543ff704388fe78…

MALICIOUS

PDF

109.9 KB Created: 2020-08-23 17:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4fdb92e8ee57cef95eeb9ab3ac9b658 SHA-1: c05b6b40785b5b1f9df3e67868f7eed5ab01f929 SHA-256: f543ff704388fe7899bd126ef6f5f563083dd5af685754655c6bd0abce123736
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a report, which is a common social engineering tactic to trick users into visiting malicious sites. The ML classifier strongly indicates maliciousness. The primary IOC is the redirector URL, which is part of a link farm designed to attract search engine traffic.

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=linux+kernel+development+report+2018 In PDF document text
    • http://files.nwaw.com/uploads/1/3/0/8/130814283/102cc33931bc.pdfIn PDF document text
    • http://sudekijok.globalsportsmarkets.com/uploads/1/3/1/8/131856333/remegiwawujuzeb.pdfIn PDF document text
    • http://files.rahealtyns.com/uploads/1/3/1/8/131872079/7462172.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/1/0435/5981/3279/files/biwuxazivol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/mopanawejexup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5198/2754/files/habitos_alimentarios_en_los_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0271/4536/files/autodesk_inventor_stress_analysis_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0713/8201/files/jutoxizabefawakijadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4617/3852/files/dagivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0726/2367/files/zudezesuzafam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2656/2722/files/63720254138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/5648933304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/18321125267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7093/9285/files/dead_island_game_for_android_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9456/4252/files/3702759548.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 3

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_off00017148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17148 5372 bytes
SHA-256: 2b127185b1189962151a1740fe5ec0c490c1ff27acfb1e02bc229501e210f94c
font_01_sfnt_off0001838c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1838C 11284 bytes
SHA-256: 677e086264db81454ace8aa281624cb2d27f51df6b9d3f3dfeffc7f303ad3f00

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