Malicious PDF — malware analysis report

Static analysis result for SHA-256 76dcc0288f75ff58…

MALICIOUS

PDF

56.8 KB Created: 2020-08-23 13:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b2b8fa98f28b26f4269c2c9e0886b761 SHA-1: 7ee6d89b6eea643d57524ea7df7e1c2546b2af23 SHA-256: 76dcc0288f75ff58d63e05ac2c74a35c5d9771dd98bdf73caf8ff999e38034ee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for a PDF redirector link. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the document is designed to trick users into visiting a malicious website.

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=dell+precision+5820+spec+sheet In PDF document text
    • http://files.americanaef.org/uploads/1/3/1/3/131380618/muxodejofidadox.pdfIn PDF document text
    • http://wunevaw.airwreckkazillion.com/uploads/1/3/0/8/130814017/kufovuzubiluj-jumupop.pdfIn PDF document text
    • http://files.hinisha.com/uploads/1/3/1/0/131070178/d39c8c.pdfIn PDF document text
    • http://files.protectparkofkeir.com/uploads/1/3/2/6/132695525/zuxigaregu.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/1/0431/3969/4741/files/ameritrade_ira_terms_of_withdrawal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/appalachian_trail_packing_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/algebra_solving.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/909040323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1152/1187/files/60033471055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0486/2374/files/jidar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9977/3341/files/brother_printer_drivers_dcp-_t510w.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5814/2120/files/methanol_water_distillation_column_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/examkrackers_1001_questions_mcat_biology.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 5

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_off0000a005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA005 5404 bytes
SHA-256: 9673bca6c18290456ad5314070182f89b1ab5c5f9dfcc74fafcd25aa867413b0
font_01_sfnt_off0000b26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB26A 10560 bytes
SHA-256: 6443d9a35e7a2d9f83a3e48ec0e2076b494afa081b3db20d87601c0ec7f835ea

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