Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd56cc0ed77dc4b…

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 04:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b82cbb1e55b40f688457ec7505f88d42 SHA-1: 24f8f810ed6ee6a5e1f1f075935dcc0df8cd447b SHA-256: 9bd56cc0ed77dc4b2e22ae319d066719a667a4b2cec6ba582934211032ee9266
194 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates that the document is designed to host numerous links, likely for SEO manipulation or to distribute malicious content. The presence of the malicious redirector URL suggests an attempt to lead users to harmful sites.

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/wix?keyword=evaluation+complement+circonstanciel In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/de60da_21d61e63b5c54498811db3db8bfdcbbc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a0756683521443d286b7d737e6dc60a6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3de774401a19459cab34877a8135017a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b89d6a7b0aeb4f74a62d7157d893c49a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b11f6d_5c891f3a032a4dd48573a423ebde7505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/bam_bam_bhole_song_ringtone.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6df952_beed2c77df6e4d7cafb5a6ec5ce9de33.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/353d00_24171b114cda46d5aa4a12fb2f77e2ec.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/429b25_1cc922c9ad7f4c4983128a68bc82d811.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_41dbeb698bd24e83b59ff60dc4f5f003.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a2403ad843d34fb4a8f57371a1049df1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1cfe37_0a9c146049184dcdbf4d1fda76ce541a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/455f95_c769120d0812495f8fe83ac02cb8cb89.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/74e905_c2a5faa6389f4f7692dc0dd406b86d30.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1fbf8b_262e9fa2ad2549f0b571c09c56b10b16.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off000056ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56AD 5096 bytes
SHA-256: 5f42db77b007e8edea3f6d5a172536983dcf61262b0939fa04d379eb5fd7847c
font_01_sfnt_off000067ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EC 10248 bytes
SHA-256: 6800427403585a85d3bf2298250a5a6028a49247d7a2298764644f9261c84159
font_02_sfnt_off00008b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2C 16376 bytes
SHA-256: bc7e3f6831be34686de02ce7be2a06b9f1fa2b1a298201cd6e3dc3baf4672bf7

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