Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d66b8ddd43decd…

MALICIOUS

PDF

45.9 KB Created: 2020-08-09 13:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f2e11bc4818a3429fb95deb3f569bf8 SHA-1: ad49c915408503e718893a92e636fbf196e5971d SHA-256: 41d66b8ddd43decdd09bbf3a9afaba3b0adda27a8f3e9369e542369df388bb58
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body, though heavily obfuscated, contains URLs that are consistent with the heuristic findings. The primary malicious URL identified is https://ttraff.com/pify?keyword=baseball+saved+us+questions+pdf, which is likely used to redirect users to a malicious site.

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=baseball+saved+us+questions+pdf In PDF document text
    • http://nekajiru.ribreastfeeding.org/uploads/1/3/1/4/131407406/557a4fea0b0c6a3.pdfIn PDF document text
    • http://poris.schrockguide.net/uploads/1/3/1/6/131606201/vazogosa-mevogelekewunun-begupom.pdfIn PDF document text
    • http://files.rumidesigners.com/uploads/1/3/2/6/132681910/c8c4f72ace7cf.pdfIn PDF document text
    • http://files.tranquilcounselingandwellness.com/uploads/1/3/2/7/132712358/fuzake.pdfIn PDF document text
    • http://files.davidgreenlee.com/uploads/1/3/0/7/130776049/3421153.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/1/0430/6678/5949/files/free_to_word_converter_download_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8917749958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9189/4176/files/folaberutudeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1844/5223/files/node_js_require_path.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/natenojutuwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3303/3877/files/aqa_a_level_economics_revision_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5435/6897/files/60271177263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/runozatuxifurutejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/baruzokave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/magic_chef_stove_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/41809249572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3698/9850/files/62980106428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65529241957.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 4

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_off000075a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A4 5312 bytes
SHA-256: 359de4c8403dabd1663f0bdedf2b82cbcc39845a10198d84577576dec6ae7e1c
font_01_sfnt_off000087c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C9 10180 bytes
SHA-256: 177deda470fc4ae6aff88f9da58856ea46a3d26b43b1882f1ac8cb3c874d50ff

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