Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdaeb54ee8407310…

MALICIOUS

PDF

46.0 KB Created: 2020-08-03 21:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d137349e436030b18ea1d6ba4d506d30 SHA-1: a411d7060ef6503a48d1e8bc019d5c93511752cd SHA-256: fdaeb54ee840731081aace2e50380cd92f18b036dbff295a311c36a82584eab5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector infrastructure, suggesting a link farm or phishing campaign. The embedded content, though obfuscated, includes a URL that is also present in the heuristics, indicating a malicious redirector. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=learn+english+grammar+pdf+file In PDF document text
    • http://files.nacinformation.com/uploads/1/3/1/3/131398250/xupisujiloxuvi-dusadibitiwiv-rikabuk.pdfIn PDF document text
    • http://files.facebodyandbeauty.com/uploads/1/3/0/8/130874124/e73b85.pdfIn PDF document text
    • http://files.crestllc.com/uploads/1/3/1/8/131858975/wugune.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/1/0437/8984/4641/files/85517887826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/98853335526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0490/2045/files/napexokotunusukoxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9963/4328/files/pabexixusomamul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9200/0412/files/kawogoziwifozif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/toxekulatuboxasalinep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7746/8327/files/dafogaluzafikusikiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0840/files/bidoloropur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/kinexurumojik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/happy_face_symbol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5374/3270/files/wukagurafawinubanu.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 5

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_off00007631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7631 5396 bytes
SHA-256: f4b7802044d54dc4501213e6eae31a5a596f9e9993ca0a7fca58cf0f77a63c17
font_01_sfnt_off00008863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8863 10232 bytes
SHA-256: 34e4d03eab4bf8ae5f87b735f7dbb65cc89baea5d86fa42c972f5067f3858c6d

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