Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2942bada314d41…

MALICIOUS

PDF

39.2 KB Created: 2020-08-10 17:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1ea8ab2a440c9c4c1cfb8e9765e99b5 SHA-1: 4ab9f1d92b686ce2d4508289cfdb3bd52bca8e49 SHA-256: 5c2942bada314d4169d45148d35c821969805d0e353cc5c1b334cf848d1d5eea
194 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector URL, identified as a malicious link farm. The document body, though heavily obfuscated, contains the same redirector URL and references to PDF files, suggesting a lure to download further content. The ML classifier strongly indicates maliciousness.

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=elegun+inicia%25C3%25A7%25C3%25A3o+no+candombl%25C3%25A9+pdf In PDF document text
    • http://files.simplesweetskalamazoo.com/uploads/1/3/1/4/131407921/kukot-zufetavedos.pdfIn PDF document text
    • http://files.emanuelaaureli.com/uploads/1/3/2/3/132302710/3397372.pdfIn PDF document text
    • http://files.page28music.com/uploads/1/3/1/4/131453247/42e1dd64.pdfIn PDF document text
    • http://files.moonbouncerentals.net/uploads/1/3/1/6/131637562/tavunowi.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/1/0429/8221/1733/files/43795552918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/gunobojipomitewipozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/fabixezolefama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/8329468696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8280/0542/files/76903216411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/44710630909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/82943432318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7685/9544/files/if_key_exists_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/35172836720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/fojaxolovakizowilumina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/delonukuparal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6341/4682/files/dipegeko.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_off00004f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F89 5940 bytes
SHA-256: 81f55e60f67515000fba67bf3404e24b1c0ee54b191b6177b22630201a4e9e58
font_01_sfnt_off00006295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 14972 bytes
SHA-256: 3a35fd81fdd1347a341ecc8a3914cb3d55437919e809bfebd97243e2ca657384

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