Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfbf2ffeca06a6fd…

MALICIOUS

PDF

61.1 KB Created: 2020-08-05 12:20:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 828aa2be0fc27ea9ed8647463f2e243b SHA-1: 80366756cc71006ae2995697275fc309f05c31dd SHA-256: cfbf2ffeca06a6fdb04d38200feea1d0145cbe643643a638af8ea6c3c0a9ff3d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sepsis+pathophysiology+and+clinical+management+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is designed to host numerous external links, likely to obscure the malicious redirector or to appear as a content aggregator. The document body contains the malicious URL and other benign-looking Shopify URLs, 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.cc/pify?keyword=sepsis+pathophysiology+and+clinical+management+pdf In PDF document text
    • http://files.lifetimenutritionllc.com/uploads/1/3/1/8/131856096/8390071.pdfIn PDF document text
    • http://files.whitecloudvet.com/uploads/1/3/1/4/131452778/371388.pdfIn PDF document text
    • http://files.coach-approach.org/uploads/1/3/2/7/132710671/mevewafixivij.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/1/0432/2318/7614/files/60826120420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5942/6968/files/pdf_ebook_reader_for_windows_7_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/pefowiwemofalitagom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93867881616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/48114814449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/dizoguzatakuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3546/7682/files/53013283810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/15557515170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/31521916220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/3650040906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/sai_baba_madhyan_aarti_in_telugu.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 1

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_off0000b067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB067 5676 bytes
SHA-256: ab57c06ce9d44cf6b50898dc917c341a17acf191ba388b71142f83093b25d05f
font_01_sfnt_off0000c3a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A4 10516 bytes
SHA-256: 8b5ba1b9d2a3019a98c21650654522af267c9f23f4b4a772c308c04a9c8a1327

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