Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ff4a9968c9b614…

MALICIOUS

PDF

38.5 KB Created: 2020-08-11 00:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60b56579a58a9815a1ba95cdab40682b SHA-1: f1d8c1635100fd00fdcc4fb211bd20148f23702f SHA-256: f8ff4a9968c9b614c2aeb9fed3dddf8df49b1f7c363a456a81cbee51f7ac02c0
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=coraline+the+graphic+novel+pdf+espa%25C3%25B1ol, which is likely used to redirect users to malicious content. The document body, though heavily corrupted, contains references to the target URL and other PDF files, suggesting a link farm or SEO poisoning tactic to distribute malicious content.

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=coraline+the+graphic+novel+pdf+espa%25C3%25B1ol In PDF document text
    • http://files.deerlakesbands.org/uploads/1/3/1/3/131379692/jitetexo.pdfIn PDF document text
    • http://wegudom.ourbaptistheritage.org/uploads/1/3/1/3/131379833/2885433.pdfIn PDF document text
    • http://files.nfca.ca/uploads/1/3/1/4/131483002/kogokotavov-mizirorisa.pdfIn PDF document text
    • http://files.catcatblog.com/uploads/1/3/0/7/130739590/ramoretunadef-netokagoletugez-gopixifexevopap.pdfIn PDF document text
    • http://files.franciscowan.com/uploads/1/3/0/7/130740571/cd252.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/1/0428/5209/0022/files/susexojonimupiparekalove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/kaplan_asvab_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2761/8209/files/pdf_tool_merge_split_watermark_encrypt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8371/7015/files/49563287245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/91846588004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/babeturinivorobimazuzaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/mathematical_logic_and_boolean_algebra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3235/4711/files/titrasi_argentometri_metode_volhard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/balevogigadan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/acta_constitutiva_ejemplo_mexico.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_off000054a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54A5 5592 bytes
SHA-256: 32a718742dde1dc52121a8896b0bf908c7daf2b338bd4b2fd74a509fe484a7d2
font_01_sfnt_off00006769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6769 10508 bytes
SHA-256: 67988bad322660029946328bab2f247f4691153b021eb3b31eb068a7f23fcdff

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