Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c03f796de7b0409…

MALICIOUS

PDF

41.9 KB Created: 2020-08-20 19:02:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d3c547b5646a10147802681da4603992 SHA-1: 6ed7633947d71e0d3f09cd85b6b55341097feb0a SHA-256: 3c03f796de7b040919adef97357988ad9a7c01f215f189ee1e43d904634c4680
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.cc. The document body, though heavily obfuscated, contains the same title as the malicious URL, suggesting a lure to trick users into clicking the link. 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.cc/pify?keyword=chapter+10+cell+cycle+and+mitosis+worksheet In PDF document text
    • http://xenope.horseshelpingpeople.net/uploads/1/3/1/6/131637016/c43faf851.pdfIn PDF document text
    • http://pijitepa.the8blockfitnessstudio.com/uploads/1/3/1/6/131637021/1196684.pdfIn PDF document text
    • http://files.cindysampson.com/uploads/1/3/1/8/131858045/9923091.pdfIn PDF document text
    • http://gefipave.centrecollegialalberta.com/uploads/1/3/1/4/131407668/b73b8a.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/1/0430/1045/7753/files/donolebexivozaxox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2340/9057/files/pijuwofinunitew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0346/1283/files/javebefizijitasexoturav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/60695623721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9599/7096/files/informal_letter_writing_topics_for_class_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7482/8953/files/genidigaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0756/5214/files/jemawogaxutaxupulojemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3821/8152/files/carpentry_and_joinery_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/frecuencia_cardiaca_unam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/kakapusiwiximagozamozat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1684/5469/files/kirefepapurixotekofeveja.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 4

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_off0000655a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655A 5668 bytes
SHA-256: c7271dfba06a3718ca615c0edfb96158495663cbf9037fadfae64db8c190b7e7
font_01_sfnt_off0000788d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788D 9816 bytes
SHA-256: f9c1cb4341b5afb696bfa99f82a9ca7f9cae5e91034aef9daa21a99c3fe4334f

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