Malicious PDF — malware analysis report

Static analysis result for SHA-256 16001decdc366b04…

MALICIOUS

PDF

37.0 KB Created: 2020-08-16 20:37:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ba02518b3544c7b84ee3ae3b5aaf775 SHA-1: 5beb3dca8617e8786f4d0d81b5204b0fd734e2f3 SHA-256: 16001decdc366b04dba028c7ad0c083a4a866dfd5b654c37592c3cd8e78763fb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to an SEO redirector infrastructure. One critical heuristic indicates a direct link to a known malicious redirector, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL and other PDF links, reinforcing the lure.

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=bhojpuri+video+gana++tinyjuke In PDF document text
    • http://files.turnditchlife.co.uk/uploads/1/3/1/3/131398059/5463605.pdfIn PDF document text
    • http://files.jenningssheffield.com/uploads/1/3/0/8/130874067/bodosenixugebeluri.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/1/0432/3803/1518/files/rapinurulatogadunofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/capitalismo_unam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9958/4664/files/41609956510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/apgar_familiar_formato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/sisibikusudagujoted.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/mukilesolikuvafulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/choices_you_play_hack_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/manual_de_biomagnetismo_medico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2892/9945/files/spiritism_allan_kardec.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68906731860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3487/7847/files/95383380123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0123/3053/files/antigenos_febriles.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_off00005295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5295 5364 bytes
SHA-256: 03106559c878b180085662eb7fb1a34e02614c41b88e13f881be01a1044faafb
font_01_sfnt_off000064e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E3 9904 bytes
SHA-256: 2c58eb08ebaaa50a256e05eb11d85e765d6e4112b11acc47ab082cdcfa80036d

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