Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f63f44a9d46d25e…

MALICIOUS

PDF

47.4 KB Created: 2020-08-13 02:28:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96cc7b320373811a43f84d48fc819f5f SHA-1: 42cb898201fa8c7341801683608d8ebf2bf50246 SHA-256: 9f63f44a9d46d25e648d3a960fa662cd01a682c56c8ef4a5dce06aae32bd44bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a malicious redirector link disguised as a 'Bulletin de paie explication pdf 2020'. This link, https://ttraff.cc/pify?keyword=bulletin+de+paie+explication+pdf+2020, is designed to lead the user to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains hosting other PDFs. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or redirection scheme.

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=bulletin+de+paie+explication+pdf+2020 In PDF document text
    • http://files.celestecrystals.com/uploads/1/3/2/3/132303175/6ccd315ab77e03.pdfIn PDF document text
    • http://files.understandingwhowewere.com/uploads/1/3/0/8/130814758/1952452.pdfIn PDF document text
    • http://files.limerickcommunitygrocery.com/uploads/1/3/2/6/132695572/valudofowal-xujowamujojef-kudemusat.pdfIn PDF document text
    • http://files.dawndiezwillis.com/uploads/1/3/2/6/132695862/tazuda_wetonibojiw.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/1/0436/9678/3514/files/tezovukenisor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/gesobet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/31740552424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0291/0104/files/spanish_alphabet_practice_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4619/8683/files/best_reader_for_ipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/43358037827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/punctuation_in_poetry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/95097297806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/17551620815.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_off00007709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7709 5264 bytes
SHA-256: f66cba291837b986aa243dfe135b964308d2f8d5c6b16c87d482dc2e6af9f990
font_01_sfnt_off0000890c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890C 12440 bytes
SHA-256: a438300d14bf1e944aff0ce36820d3c0f3e1055fd273a5100f5834bfcc63827c

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