Malicious PDF — malware analysis report

Static analysis result for SHA-256 280805291404c6e0…

MALICIOUS

PDF

46.7 KB Created: 2020-08-19 08:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4237dfc8fb9f644fe4b9253c9a60af59 SHA-1: 717c5131f782ab5b4dd0d3ea4f64d238ed133a4e SHA-256: 280805291404c6e0c273e21fd50f46130c23f7c9935f7fb05fa41959b1671070
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one critical heuristic identifying it as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract traffic. The primary malicious link, 'https://ttraff.cc/pify?keyword=informacion+de+plantas+alimenticias+wikipedia', is a clear indicator of malicious intent, likely leading to further malicious content or phishing pages.

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=informacion+de+plantas+alimenticias+wikipedia In PDF document text
    • http://files.lindyjames-christenson.com/uploads/1/3/1/3/131379612/3953267.pdfIn PDF document text
    • http://files.belfastgdp.co.uk/uploads/1/3/0/7/130739528/rikejenefalekib-nulux.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/1/0445/4989/8399/files/47831559641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6127/9896/files/xegapusatozot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7261/0464/files/zudixitalalawajawakoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5399/6442/files/conceito_de_abordagem_qualitativa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/xozimidojukenunofetuwupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/39557020546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/cs_go_config.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3900/6615/files/vugegiwilepidupirijebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/goduwatusewaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/votepovekegagamufakini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9199/2484/files/dufesatifefaluzajevabapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/betenutul.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_off00007700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7700 5392 bytes
SHA-256: 0fb00b137cb1117798aac02f2e8c97caaeae4a6f5dac7841e168142ccd1d995f
font_01_sfnt_off0000894b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894B 10628 bytes
SHA-256: aa311f99b6629f89290bfb9600f67e4ac8f4364de2d7613019501ebb04b5d285

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