Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2c095528a45e9d…

MALICIOUS

PDF

45.3 KB Created: 2020-08-21 03:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 614fc81f8b4fb8f99477d0b466f79c84 SHA-1: 7a2550d91ab81e16c9f952027547093a455c6ded SHA-256: 2c2c095528a45e9d369a5b6040ba645a57a2d678a2e0b668ca2c429a36754296
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to 'formation of body cavities embryology ppt' and includes the malicious URL. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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=formation+of+body+cavities+embryology+ppt In PDF document text
    • http://files.elizabethhorton-newtonauthor.com/uploads/1/3/1/4/131438216/1414960.pdfIn PDF document text
    • http://files.generationbusy.com/uploads/1/3/0/7/130775592/6859983.pdfIn PDF document text
    • http://files.inyfilmfest.com/uploads/1/3/1/4/131453605/91b5a6ccfa31.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/1/0431/6243/5739/files/11887809034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7275/7670/files/61743162120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/metales_de_transicion_caracteristicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/zafot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/8616490263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/kofix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/linked_list_c_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/lerolome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6103/9524/files/snipping_tool_shortcut_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/rlcraft_wiki_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7960/6177/files/irrigation_engineering_by_kr_arora_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/4966643251.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_off00007049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7049 5732 bytes
SHA-256: 90c2083ab6a26f0b341af8802be480a5bc591a3a70af3083b381922b85aeb408
font_01_sfnt_off000083b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B8 10668 bytes
SHA-256: c1a8ca10036b3d232ff90a1c1ac1100d4b576d29d8f8c5285e5bc56025bb21b5

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