Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64bcafc16d8c9cd…

MALICIOUS

PDF

59.9 KB Created: 2020-08-01 23:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94054baaae241098006a757e94b9e519 SHA-1: ea437a45376e97cfed4fa9846f262c384c2bc052 SHA-256: f64bcafc16d8c9cdb2b825c8694b04bafa947b93716990550ded3bccfb2c09b7
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/pify?keyword=don+juan+lord+byron+pdf, which likely serves as the initial stage of a malicious download or phishing attempt. The document body itself contains garbled text but includes the same malicious redirector URL and several benign-looking Shopify URLs, suggesting a lure to download a PDF.

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=don+juan+lord+byron+pdf In PDF document text
    • http://files.aliawalston.com/uploads/1/3/1/6/131606815/levupuxupoj.pdfIn PDF document text
    • http://files.kiefferphotography.com/uploads/1/3/0/7/130739308/1337339.pdfIn PDF document text
    • http://files.cypressarbor.com/uploads/1/3/0/7/130739069/waxijo-majogasigemo-weselagodoxeleg-fefuvisa.pdfIn PDF document text
    • http://files.bootsanddiamonds.org/uploads/1/3/1/6/131637104/2916b958fa0ac79.pdfIn PDF document text
    • http://files.elkriverinvitational.com/uploads/1/3/1/6/131637224/dilupulex_xaviruvizedanel_dolejibofole.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/1/0435/3910/3912/files/xorafut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74731072541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9430/files/nijafujer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2187/6899/files/59367585904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3263/2730/files/93411485141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/luvisokogezapawenojax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5029/4678/files/74196340681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/nexogamilive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/45652621861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0346/2303/files/tikevatubexirefojak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/41264742185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0572/8152/files/vudonevimevikifuda.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD55 5172 bytes
SHA-256: 6bd2fcd5f461dcd21ac49e17761fb441d9e34b59b76a1dffb256c9899bffa5ce
font_01_sfnt_off0000bf0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF0D 10388 bytes
SHA-256: 21a7e2ce348c2b46409f78c5db6a57e39c3354060aed7a62d323214078534f52