Malicious PDF — malware analysis report

Static analysis result for SHA-256 504ad361c18c409a…

MALICIOUS

PDF

48.8 KB Created: 2020-08-01 03:23:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f05b7a6efc68e2e8f290f300faa9b078 SHA-1: 58718cab5465af03d273219abf98c726edd4a234 SHA-256: 504ad361c18c409a4886b94f57d3489455fde129a68b7440892f8055716593db
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised with a keyword related to 'Zoobe 3d animated messages'. This suggests a phishing or scam attempt. The ML classifier strongly indicated maliciousness, and the PDF structure itself contained a mass external link farm, further supporting malicious intent. No scripts were extracted, but the primary malicious action is the redirection to a harmful URL.

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.ru/pify?keyword=zoobe+3d+animated+messages In PDF document text
    • http://files.columbiadentcenter.com/uploads/1/3/0/9/130969910/jubegonakajij-desagomabof-sateno-pikilolot.pdfIn PDF document text
    • http://files.tiesthatbindstore.com/uploads/1/3/2/6/132695620/821df10a19baea7.pdfIn PDF document text
    • http://files.madisonrosefund.com/uploads/1/3/2/6/132683181/xavususetas-vasefisidu-tosup.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/1/0431/0876/1764/files/43680760902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/37848630580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/82642234615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/vefiwaxoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/judexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/33828243546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/20135536430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/poe_chaos_recipe_filter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/6491276195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3734/3387/files/jelonel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0255/1716/files/87430656228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/47894343518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6448/2202/files/7826117741.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 8

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_off00007896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7896 5276 bytes
SHA-256: 24ef9d21dc69b2a2127946b2e492120d7c853cd95f40f981342d3078535fda46
font_01_sfnt_off00008a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7B 16692 bytes
SHA-256: b4a650fc60a7fc3587cb4293d1cafa286558164b6229e7e08983a7de92219d30

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