Malicious PDF — malware analysis report

Static analysis result for SHA-256 78908711e61cef95…

MALICIOUS

PDF

71.4 KB Created: 2020-08-10 13:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5925742f61ca1f29481374043c033ff2 SHA-1: 8da8acbac26872a14af8a40b25c707a37e5761da SHA-256: 78908711e61cef955ebbf7d0a16e14a8f6848f8c34110d79df7449e3c72a483d
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic identifying it as a malicious redirector and a link farm. One prominent link, 'https://ttraff.cc/pify?keyword=athol+fugard+plays+pdf', is explicitly flagged as malicious. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary purpose is to redirect users to potentially harmful content.

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=athol+fugard+plays+pdf In PDF document text
    • http://files.glenoakchurch.org/uploads/1/3/1/4/131438541/2abefc16856.pdfIn PDF document text
    • http://files.staplertraining.com/uploads/1/3/1/4/131483386/zegite_tifanazi_sapofadef_foridexar.pdfIn PDF document text
    • http://files.al-aidc.org/uploads/1/3/1/4/131483275/66e389ea.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/1/0432/1896/0541/files/mitosis_and_meiosis_stages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/tepogirefafuwewegudotez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/balarama_malayalam_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/noferabed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/32956986244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/70775176316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4892/6364/files/x3daudio1_7_dll_is_missing_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1256/2849/files/thyroid_dysfunction_in_pregnancy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/lekizomofuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/28257722120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/suvonit.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_off0000cdad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDAD 5396 bytes
SHA-256: 375e781843f419da90773ec1639677bf4b305df9371608b44e914d19a6ba4ba6
font_01_sfnt_off0000e00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00E 15256 bytes
SHA-256: 81a6b712739fc372a787654ae17cccff4f5c3ff48de5ee52a7440022bff26b27

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