Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2b7bd267584bfe…

MALICIOUS

PDF

43.8 KB Created: 2020-08-12 17:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f67c9d8b4f21d4d86fc016d6651718b SHA-1: e055b9460ec9afc98f6990067a7ca20020a27d8e SHA-256: fc2b7bd267584bfefd6473d82a6f567b355eac02e8b0ffa8c8eca6b33daf56c5
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high ML score and the presence of numerous embedded links, including one pointing to a known malicious redirector. The document appears to be a link farm, likely intended for SEO manipulation or to distribute further malicious content. The primary malicious IOC is the redirector URL, which suggests a delivery mechanism for potentially harmful payloads.

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=polisacaridos+definicion+pdf In PDF document text
    • http://mojujidup.americanbeachtour.com/uploads/1/3/2/7/132741334/tilojinuwa.pdfIn PDF document text
    • http://files.schoolhealthpromotion.org/uploads/1/3/0/7/130738799/kolubuxirudisofo.pdfIn PDF document text
    • http://files.mrstartroom.com/uploads/1/3/2/3/132303117/wokazuloko.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/1/0438/6645/6224/files/koronumimafaramaluzutig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/dobajabulopavat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/netawab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3680/2204/files/govebawujofotudalosetug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0885/1098/files/bipisolafiludedobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3351/8489/files/learn_data_structures_and_algorithms_with_golang_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5764/2648/files/asma_gina_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/44663150468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/mijama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0450/9853/files/gavuvas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/luduz.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 2

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_off00006adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADB 5152 bytes
SHA-256: 5722f110e32deb193e15e6ffafe15e5c881b6536227d67c4c351283733f98709
font_01_sfnt_off00007c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6E 11156 bytes
SHA-256: b44aadd000047e16c6e9663c84f0415792689af1992da7a48819df9928834ed5

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