Malicious PDF — malware analysis report

Static analysis result for SHA-256 f918d9711cff001b…

MALICIOUS

PDF

44.8 KB Created: 2020-08-22 15:24:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d5f736e44cf17768595f01f6b110af9 SHA-1: 6c47d6e88a496875b3f26b202d63661c4938e00e SHA-256: f918d9711cff001bf723d7cbfd30d5a888451146500c5b6ca4277d58d9d3fdb5
194 Risk Score

Malware Insights

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

The PDF contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a link farm tactic, with numerous Shopify-hosted PDFs. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be a social engineering lure using a fabricated 'sports day report' to entice clicks on a malicious URL.

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=sports+day+in+school+report In PDF document text
    • http://files.patticarmen.com/uploads/1/3/1/4/131453967/f2ed2b745.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/1/0432/2679/2093/files/tekir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/60858869944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8089/8973/files/94204890343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6735/7846/files/mupisavegumas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6091/9461/files/music_from_spotify_to_itunes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/gemetezotinobivupepov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0071/5674/files/32443830218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5040/0920/files/43948910146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/428468060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8112/5278/files/lovetogodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1731/3178/files/20491613847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/mecanismo_de_accion_de_anticonvulsivantes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9892/2392/files/bimapara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/babytrend_snap_and_go_stroller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8691/3431/files/92841955947.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 1

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_off000071c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C2 5364 bytes
SHA-256: 801c896c71b9f3ffdd31b1912d4e2f1355a54235df968e493dcd8e547514a284
font_01_sfnt_off000083f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F5 9992 bytes
SHA-256: 5e9acb5ed8082c3155853771578a422593f32bb7f73b518e946a84e7354f1f42

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