Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad4afb7c522cd0a…

MALICIOUS

PDF

44.0 KB Created: 2020-08-06 10:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af01a40346548bb86da2434d80c29c43 SHA-1: 9975ea0f2a7a1e59147c65c75ca6f5290c0ea5b0 SHA-256: 4ad4afb7c522cd0a647954c460acf6f5653d05ac19c919064b307dd7adfc1767
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, a technique often used for SEO poisoning or to obscure malicious redirects. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=productos+alimenticios+innovadores+pdf', which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to external content. No scripts were extracted, but the PDF structure and link farm strongly indicate a redirection-based attack.

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=productos+alimenticios+innovadores+pdf In PDF document text
    • http://files.mcjpgs.com/uploads/1/3/0/9/130969184/miwaranam.pdfIn PDF document text
    • http://files.buymyoldvehicle-peterborough.co.uk/uploads/1/3/1/4/131406182/b37fe296.pdfIn PDF document text
    • http://files.aliciagalindo.com/uploads/1/3/1/6/131636632/5715222.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/1/0448/4333/5837/files/belfast_city_centre_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/50056080619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9839/7085/files/mojujekatidaragasevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/vamaluxuwizidajedabuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/the_real_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/62387083282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/beckett_plays.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/fokalozan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6513/files/57321457456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/tuvunoxezasufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7821/9944/files/kugevalibaxale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/65861856959.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 8

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_off00006a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0E 5364 bytes
SHA-256: af15c22b1242f2c10d4825e7bbd4d5e09203f45b4f1d5a619c1b82f2b607398c
font_01_sfnt_off00007c3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3F 11500 bytes
SHA-256: 630122d4dabe5268c93d2c3a88001a4b16cb981997554a81a8147adb47a12e90

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