Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ccc869241ac2724…

MALICIOUS

PDF

38.4 KB Created: 2020-08-28 14:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11cc2f033f728a7e50babfca3a04766b SHA-1: 778dfc418c51b81ffd18794d2fcea435cc6048cb SHA-256: 8ccc869241ac272431ce4dc557c7c7b186ed6a1be2169c6aceb50adc2bbb5599
234 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a large number of embedded links. One of these links, https://ttraff.ru/pify?keyword=diccionario+teologico+del+nuevo+test, points to known malicious redirector infrastructure. The document body is heavily obfuscated but appears to contain the same URL and a list of other PDF links, suggesting a link farm or redirection scheme. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/pify?keyword=diccionario+teologico+del+nuevo+test In PDF document text
    • http://sisiresu.cyfairironmaidenslacrosse.org/uploads/1/3/0/8/130814328/vudogadiva.pdfIn PDF document text
    • http://files.myhandsongames.com/uploads/1/3/1/8/131856664/d947420ccafb.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/1/0440/3052/5590/files/types_of_arrhythmias_ecg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/12_note_kalimba_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7886/7351/files/52493701726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/birthday_songs_for_brother.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/the_electronics_of_radio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5682/3453/files/strategy_brainstorming_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77084518355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6079/7333/files/examen_diagnostico_espaol_3_secunda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/the_disappearing_spoon_sam_kean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5720/9753/files/wiz_khalifa_california_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6121/3344/files/46553983641.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_off0000539c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x539C 5168 bytes
SHA-256: e219c707960e38677fda8902acc4492569b88b9a5cd46a991f719fcb2b7d7612
font_01_sfnt_off00006538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6538 11656 bytes
SHA-256: e37eec549e365f31eeadead3eb8ba28e54ef1d47e9bfe061b3c2bcc5c820ff21

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