Malicious PDF — malware analysis report

Static analysis result for SHA-256 87d1298a41f0374c…

MALICIOUS

PDF

47.0 KB Created: 2020-08-22 01:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e6bfe0816f9756483e771d5d18f78c5 SHA-1: d35807e80633d0d9135c5fc7464e43d638e9340d SHA-256: 87d1298a41f0374c056a72a0582d8849b7afe00e1a7767f5ca391fb835b7eb95
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to external resources, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that are part of a link farm designed to appear as free downloads. This suggests a phishing or scam attempt to redirect users to 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=agente+oxidante+pdf In PDF document text
    • http://files.favicondigital.com/uploads/1/3/1/8/131858592/fb373.pdfIn PDF document text
    • http://files.showdownvapor.com/uploads/1/3/0/8/130813054/vibotuvulo.pdfIn PDF document text
    • http://files.parkorchardsrecordingstudio.com/uploads/1/3/1/3/131383342/496662.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/1/0434/1019/4582/files/blacksad_juego_de_rol_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5913/2056/files/47208103572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/21715792133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13002849425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/10096008594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4085/8527/files/tawujobozen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/bed_sheets_sets_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3365/6476/files/family_therapy_theories_and_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/windows_10_64_bit_iso_1903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6106/7428/files/gaxirinefixunevifurupeto.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6947 4748 bytes
SHA-256: a3b30dc55ec623923a3f58b4b575031c2ce8185deebadc90caf435fdf4281ecf
font_01_sfnt_off00007982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7982 11804 bytes
SHA-256: 66200b0aa6bded9ae750d2dae2b892f793e4302660880eecd4ae3ef874454eb9
font_02_sfnt_off00009fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FDA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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