Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae4898891751732…

MALICIOUS

PDF

40.5 KB Created: 2020-08-09 11:34:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51aa5e8f02c93251a9111813d7aaef31 SHA-1: cf01adddbfbd7d9a354749b7666cfbeab83c51ce SHA-256: cae48988917517326879568c0377230bd18908507d01c06dc4f0a52fa80f8658
194 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which point to Shopify-hosted PDFs, suggesting a link farm for SEO manipulation. Crucially, it includes a redirector URL, 'https://ttraff.com/pify?keyword=nios+506+assignment+answer+in+english+pdf+download', which is flagged as malicious. This indicates the document's primary purpose is to redirect users to potentially harmful content under the guise of providing assignment answers.

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=nios+506+assignment+answer+in+english+pdf+download In PDF document text
    • http://files.neuropolisblog.com/uploads/1/3/2/7/132712050/033194eb5cc.pdfIn PDF document text
    • http://files.synapticbiology.com/uploads/1/3/1/6/131606758/9777384.pdfIn PDF document text
    • http://files.jolynneharenza.com/uploads/1/3/0/8/130874204/5025234.pdfIn PDF document text
    • http://kafazigux.winslowschoolofmusic.com/uploads/1/3/2/6/132682076/7764826.pdfIn PDF document text
    • http://files.ebcentre.co.nz/uploads/1/3/2/7/132740515/fekazenezewilikofe.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/1/0428/7247/1718/files/9615795643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/36463681796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/teluduzuwiwovuzadesetore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4162/0119/files/perixutojav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6326/9789/files/convert_base64_to_ionic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/fotalavagak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4372/3163/files/72637833612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/41752187376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6719/6063/files/megutasubexijuwujasad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2588/1498/files/adam_smith_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7198/7098/files/29269719679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76640573288.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 7

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_off00005df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF4 5936 bytes
SHA-256: 59a20511db05fa75a835923d5ff5f84e32f7a668ecc168883e99b9fcf8d27264
font_01_sfnt_off00007216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7216 10180 bytes
SHA-256: 0cc62ab4877d32eb747e7f50fca033b207d7fc584f0c5351b419c6f8271a379c

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