Malicious PDF — malware analysis report

Static analysis result for SHA-256 232447253350a810…

MALICIOUS

PDF

54.7 KB Created: 2020-08-09 07:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa3e20ee582dcee2d4fe757beaceb50c SHA-1: 7d902e20bff103109362a308d33b0072625c46fb SHA-256: 232447253350a810dc8a36df20209ba5010d6a8b87fbaa6cd71ab648f5a0ef90
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=machine+learning+pdf+2020', suggesting a lure to download or view content related to machine learning, which then redirects to malicious infrastructure. The presence of a visual download button heuristic further supports the social engineering aspect of this attack.

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.cc/pify?keyword=machine+learning+pdf+2020 In PDF document text
    • http://sutumixu.viking-edu.com/uploads/1/3/0/7/130775045/6ae0f557d22.pdfIn PDF document text
    • http://files.transitusmariae.com/uploads/1/3/2/7/132710700/299140.pdfIn PDF document text
    • http://damego.guydebordclubofhouston.org/uploads/1/3/1/0/131070356/xufatom.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/1/0438/2906/7933/files/tiwozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/saditemebusapaminumopovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2670/8637/files/kibulegikusela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ganisififado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/tapadewokuvepapikim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2960/1175/files/namapexoxipowobuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/96236058828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3263/2730/files/71693776011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/capitalizao_composta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/buralobopituvogiziv.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_off000096ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AC 5516 bytes
SHA-256: 8d0928da613378571f64032bdb08c44b9c520066932ef65fb3fa3e4350354023
font_01_sfnt_off0000a977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA977 10652 bytes
SHA-256: 68784da90406a6ba39297876265d21a2f113f5973220faa31057f2186c34848d

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