Malicious PDF — malware analysis report

Static analysis result for SHA-256 15bca7166b90ac56…

MALICIOUS

PDF

70.8 KB Created: 2020-08-06 21:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ceafae0a0117b2292118d970f6f0a290 SHA-1: d66834d2946c77be822bf512f057fc2affd7331c SHA-256: 15bca7166b90ac560db4fff7e479b7d537b3c4572901917144f2a31d18be5e3b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirection and a link farm, specifically pointing to a redirector URL. The presence of a 'download button' lure and the ML classifier's high confidence score suggest a phishing or malware distribution attempt. The embedded URL 'https://ttraff.ru/pify?keyword=cable+and+deadpool+comic+pdf' is the primary indicator of this malicious activity.

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.ru/pify?keyword=cable+and+deadpool+comic+pdf In PDF document text
    • http://files.manalily.com/uploads/1/3/1/4/131406086/6634537.pdfIn PDF document text
    • http://files.andiamo-ranger29.com/uploads/1/3/1/3/131382092/pajoj-goxoworusuwofez-fozek.pdfIn PDF document text
    • http://pijuzu.blendedeo.com/uploads/1/3/0/8/130874478/wariwijiko_bavupiladunira_jiguvuxuxej.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/1/0435/5214/5560/files/23828650639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2434/files/18741889746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/57950855797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0564/8791/files/fejupifexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/bujuwoseruxes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/57432055636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8593/7305/files/novaxobilis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3367/3380/files/bageg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/91880988884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6318/1473/files/votalifefupodisero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4804/1637/files/11294422314.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 6

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_off0000ce69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE69 5072 bytes
SHA-256: d3de48045d26f052dd8d049ef57d9d98c53362375425b6fe1397ef3df392cfc3
font_01_sfnt_off0000df96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF96 14976 bytes
SHA-256: 3739a6a9acd133fe2b469fe7e9c80d5e5017aeb6ecc8f172b463e0d44868dcd1

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