Malicious PDF — malware analysis report

Static analysis result for SHA-256 53bfe0e058d4d53c…

MALICIOUS

PDF

40.0 KB Created: 2020-08-22 16:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f59eef8e0e0977d4373ccc06475e7dd SHA-1: dd89c104240179b3dc14a59a063c4f29e8d43749 SHA-256: 53bfe0e058d4d53ce8edd49809b60fc3835c619afee7af2d2cd4e562d68f1791
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF document contains a lure related to 'Acp poster presentation guidelines' and embeds multiple links. One critical heuristic indicates a malicious redirector link to 'https://ttraff.cc/pify?keyword=acp+poster+presentation+guidelines', suggesting a social engineering attempt to lead the user to malicious content. Another heuristic flags a PDF link farm, with many links pointing to shopify.com domains, though these specific ones were marked benign. The document body itself is heavily obfuscated and contains what appears to be the malicious URL embedded within it.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=acp+poster+presentation+guidelines In PDF document text
    • http://files.sarahgousse.com/uploads/1/3/1/4/131453907/pijikuzezetobede.pdfIn PDF document text
    • http://files.labradoodledelightsoflot16.com/uploads/1/3/0/7/130776855/wiremidorejis.pdfIn PDF document text
    • http://files.champagneandlinen.com/uploads/1/3/0/8/130873945/efacd63.pdfIn PDF document text
    • http://risemox.roundmountaincreamery.com/uploads/1/3/2/6/132681556/rufavatapeko.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/1/0450/3116/2006/files/life_and_death_twilight_ita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6345/7432/files/parajebubimuzularejoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9197/files/hayes_auto_sales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/15791372408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/10921340045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/free_excel_equipment_maintenance_schedule_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/abstract_painting_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/56984414984.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_off00005f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F81 5232 bytes
SHA-256: f4bb4a417d41cbfd02cec01c2e5bf9f9972736a8b71f18d81e169404d064ac58
font_01_sfnt_off00007151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7151 10044 bytes
SHA-256: 27d8d9bb17f552bd092b960cf886a1bd04c3191a16bde5f71a205c6ac24da151

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