Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ca24ae71f81b71c…

MALICIOUS

PDF

48.7 KB Created: 2020-08-16 16:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9add73e8e3eb2a504d20c564feb34dc5 SHA-1: 00e6226c7579b0d408bec8feb5e5ab381a10e302 SHA-256: 3ca24ae71f81b71c159440c2d9b78a470a07fd79f3a21755af2ae586ca3ffd94
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a link farm and a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=enfold+avia+template+builder, which likely serves to obscure the ultimate destination of the attack. The document body itself is heavily obfuscated and contains references to the redirector URL and numerous other PDF links, reinforcing the link farm and redirection attack pattern.

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.cc/pify?keyword=enfold+avia+template+builder In PDF document text
    • http://files.scarboroughukes.com/uploads/1/3/0/7/130738850/2ad4c4a02b51c7.pdfIn PDF document text
    • http://files.mom2momsalesmichigan.com/uploads/1/3/1/4/131406082/siwobuz.pdfIn PDF document text
    • http://files.bigislandeventrentals.com/uploads/1/3/0/8/130814258/2236c2de5262.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/1/0440/6162/2437/files/firurilolizesobajexar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2611/9847/files/jamon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0960/5791/files/totirusejopodinidiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/among_the_sleep_apk_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/9761202185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1103/7591/files/padurenevanitogasokuxole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/texas_car_title_transfer_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/nolukexirapesajonotamuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4371/7274/files/92901582836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/zelda_ocarina_songbook_12_hole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/53083666648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0105/1293/files/98152780853.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_off000078c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C3 5164 bytes
SHA-256: cff0ddbcc98734f1791b20fb03e3cc701d52352f149b0654d6a7c2ad4f9f599c
font_01_sfnt_off00008a49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A49 14020 bytes
SHA-256: 10beee890b17cfc3fc6587c0d16b2d26e16458670349f75b46be8fc414dd9ad9

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