Malicious PDF — malware analysis report

Static analysis result for SHA-256 f15d3cb685c0e644…

MALICIOUS

PDF

54.9 KB Created: 2020-08-12 12:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a0e2b719b154c27c597558ab747898c SHA-1: 58deec896c0b2f45db38da713abeb7f576aa45f9 SHA-256: f15d3cb685c0e644c5a4f61d3b1c82120f930f1c4d59101ce2ad57abb729a624
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=oxford+physical+science+grade+11+textbook+pdf'. This URL is embedded within the document body, which is disguised as an academic textbook. The presence of a link farm heuristic further suggests a malicious intent to drive traffic through potentially harmful URLs. No scripts were extracted from this sample.

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=oxford+physical+science+grade+11+textbook+pdf In PDF document text
    • http://files.fairytaleparties.ca/uploads/1/3/1/4/131483955/4c400.pdfIn PDF document text
    • http://files.kinderkiddles.com/uploads/1/3/1/4/131452867/c6ceb669a.pdfIn PDF document text
    • http://gugipet.saratoganykennelclub.com/uploads/1/3/0/8/130814088/4246291.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/1/0437/2260/4695/files/bhagavad_gita_in_kannada_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/46427990642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/inverse_of_a_log_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/77363931764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8768/1952/files/migize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9906/0376/files/99120317336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/jisovejibejetem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/dinikatitabepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/kotijipudamoxine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/la_noire_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3362/files/besm_d20_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7073/2950/files/32076137193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9058/2435/files/55596067718.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_off00008fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAD 5868 bytes
SHA-256: ab68b9312fef71463bc9da244f8670d7284bedde2ab488f0b3b72b0c9a4253dc
font_01_sfnt_off0000a3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B9 13192 bytes
SHA-256: 84b435e8c06cfe4c13bd0d9e3fc79ebf40734f65fa973a3459f257664ac014ef

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