Malicious PDF — malware analysis report

Static analysis result for SHA-256 b53592ee736c2870…

MALICIOUS

PDF

57.6 KB Created: 2020-08-31 16:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b8461a55773efedf3b35f672f61c027 SHA-1: 052be185afdc05b7da2bf529ff580eb5396e80f7 SHA-256: b53592ee736c2870c80087115cf9efbfaff21b6d2a4a3ffdf1c7dd974fe5bf1b
194 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/wix?keyword=islamismo+alcor%25C3%25A3o+pdf. This heuristic indicates a social engineering attempt to lure users to a potentially harmful site. No scripts were extracted from this sample, limiting further analysis of its behavior.

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=islamismo+alcor%25C3%25A3o+pdf In 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://static.usrfiles.com/ugd/b8c837_404531e346b44571b85ab469ac98a2ca.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3b85c4984ff244058e65dd367f31e851.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ac701_4aa42aa0c96f4f1fa5a9a9f875ad5792.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/756799_0e71fe84fca54fe1bbe06f943b399b7c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8e1900_24142ddd78394b2eb4b6a6d0674468a3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ee9d3f_4d95a094deb24fd8ace2bc7bb67e1715.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1bf73c9469a149e29844297101e16ec4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_992f0d430cf3468286aeb16cf15a841c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/57532530986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/popejalalovametamasosezor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/bsc_physics_syllabus_bihar_university.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 7

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7424 3012 bytes
SHA-256: 1f704321da6c9533394e3daca62f4c9b2d8e087e2f11655debdc550516026f40
font_01_sfnt_off00007eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEC 5040 bytes
SHA-256: bdc0d62ed9494561340d549c2a49388666479e2bce0edf8fa0186cecb6d68093
font_02_sfnt_off00008f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F65 10612 bytes
SHA-256: f84519344f7d6d8124835e0beedc6dd66e191c5cb08fbe37cd226a43a5e0c51d
font_03_sfnt_off0000b351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB351 16416 bytes
SHA-256: 44941aca9e0c172015cc49c1bd667ade65070f6d951146c3c537a46195682db2
font_04_sfnt_off0000c980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC980 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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