Malicious PDF — malware analysis report

Static analysis result for SHA-256 f471f5013f7399d0…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 03:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70b9d1590c333cb6236f369cfe8dfba7 SHA-1: 0fce5e02bc05e872be1b1016c09d0b9f7e19f83e SHA-256: f471f5013f7399d004a0dcebe5e4894157ed1f3bba595de34201dc01c0edf85f
202 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised as a download for 'free printable comprehension worksheets'. This indicates a social engineering lure to redirect users to potentially harmful content. The document also contains a large number of links to Shopify-hosted PDFs, likely an attempt to manipulate search engine results or appear legitimate, but the primary malicious intent is the redirector link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+printable+comprehension+worksheets+year+2+uk In PDF document text
    • http://files.stephenelvidgeart.com/uploads/1/3/1/4/131453429/serim_welezeb_ramogewofezap.pdfIn PDF document text
    • http://files.sass-and-crafts.com/uploads/1/3/0/7/130775384/xabowutegajojifik.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/1/0431/0564/8791/files/61767071357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/cancer_de_pulmon_histologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/27992120949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3093/7751/files/mezopafuxum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/jopagegajurofimolor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/wow_hunter_heirlooms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/66612262535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1624/7703/files/togejaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3292/6615/files/number_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6317908028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/romozojiwadimenugefebesix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2434/3462/files/men_fitness_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5517/6097/files/administrao_de_empresas_gilmar_masiero.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 8

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_off00005f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F49 5656 bytes
SHA-256: 2f84ebc967c9e295f5c999706e5382ffc3da9550ab60b654eeba47a36022f4c1
font_01_sfnt_off00007268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7268 11448 bytes
SHA-256: fc38ba775705988b6a9b5d13faf10ef8b370be5c74e3f9f62ed51dc0ca53c55d

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