Malicious PDF — malware analysis report

Static analysis result for SHA-256 d24919799e8bb62b…

MALICIOUS

PDF

57.9 KB Created: 2020-08-08 20:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4d4c06509e423783ea08157d79a88ec SHA-1: 88673c6a00ad36feebc28ce1464b208a9239c145 SHA-256: d24919799e8bb62b2703e145d5a87815fa9356e70f52bffab62e965d67b816da
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, with one pointing to a known malicious redirector. This suggests the document is designed to lure users to malicious websites. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the analysis of specific behaviors.

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=antigone+de+jean+anouilh+pdf In PDF document text
    • http://files.northernwhaleband.com/uploads/1/3/1/1/131163851/lafefodosi_morakakedepuj_bejabetug.pdfIn PDF document text
    • http://files.livebettertherapeuticservices.com/uploads/1/3/1/1/131164425/nerowagot-setikuwuvageg-mixejet-jidegulutajux.pdfIn PDF document text
    • http://files.mrcoop.org/uploads/1/3/1/4/131437680/8aeb58d626ecda.pdfIn PDF document text
    • http://files.petermcdonnellwriter.com/uploads/1/3/1/6/131606366/fudavusuxu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/journal_and_ledger_entries_of_accounting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/78535090918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/dovupujofix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/batch_file_commands_list_with_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3768/files/wudosakajajibisenofegewal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1959/0040/files/footaction_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/33941667969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9710/4288/files/44180805380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/88340601725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/75861499479.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
🗂 Part of campaign: ashlandcountytowninsurance.com 4 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E06 4976 bytes
SHA-256: 2d7dc799421d32c9f7b6d2195e75b692b97646e211cffc2c674eb4ef951a5133
font_01_sfnt_off00008eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEC 1928 bytes
SHA-256: 79ba2a75b07bbab57120f0dbbda41a14ee5959f4d9bc6596213a0d5fd4a6ea31
font_02_sfnt_off0000981f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981F 17916 bytes
SHA-256: c4ac2bdfe62e416fc89cba711b87244fb7546e7e19d2a6bcad4fe9aad4488fb6
font_03_sfnt_off0000cc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f