Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc84396d23fecc8…

MALICIOUS

PDF

43.0 KB Created: 2020-08-03 22:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 502cb41ca0182cc9af30002f0940b798 SHA-1: 9ace07a588305b0db4e0cb3f2e988ed6dd3e536f SHA-256: ffc84396d23fecc805444b726aa2e9970fc5dcee56b81887b910d0c084a8fc6f
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, with one identified as a malicious redirector. The heuristic firings indicate this is a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=acls+bradycardia+pdf, which likely serves as a gateway to further 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.com/pify?keyword=acls+bradycardia+pdf In PDF document text
    • http://files.carnegieartcornerstones.com/uploads/1/3/0/7/130738812/bb57de.pdfIn PDF document text
    • http://moziv.mammothapogee.com/uploads/1/3/1/8/131856185/jabaratobiv-vutuxazafota.pdfIn PDF document text
    • http://files.narsa-us.com/uploads/1/3/1/4/131437504/9054355.pdfIn PDF document text
    • http://files.stjohnofgod.net/uploads/1/3/1/3/131382907/7924245.pdfIn PDF document text
    • http://files.inneractalliance.org/uploads/1/3/0/8/130874599/18bd5.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/1/0431/7125/0333/files/77415762932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/fezeluwuruzuveruvezoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/22707180998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9476/9821/files/fisixejovasagisuzalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/52313711091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/59245252930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/2767984165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3844/0598/files/litemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/palm_trio_650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuxojusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4896/7063/files/38549805063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6498/2693/files/zuzevugafewafepovivalux.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 6

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_off00006afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFB 5380 bytes
SHA-256: 3177abbbf5773630ad28fed9adc6d94d29287269d67a252aa83fc468866c4da7
font_01_sfnt_off00007d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D58 9972 bytes
SHA-256: 634ef6aad091edc193b765df5e4823d067050bca6e7f4a247d9055221a07370b

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