Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1fba2a892d122f…

MALICIOUS

PDF

49.7 KB Created: 2020-08-30 10:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64153b762f290bfb51183a6d53c63517 SHA-1: 1194bb00f90180e230b714a46bc0a77b9be220bc SHA-256: 9f1fba2a892d122f75903cd9ba3aa7cdb0fc3dcb326e86b9f50dd352b264e9a1
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The embedded URL, https://ttraff.cc/wix?keyword=exercice+accord+participe+pass%25C3%25A9+3eme+pdf, is the primary indicator of malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a PDF exercise, aiming to trick the user into clicking the malicious link.

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=exercice+accord+participe+pass%25C3%25A9+3eme+pdf 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/b8c837_4f3c77502bd8481685a7886b86258d2a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_2f3a53aed817421298ef206ac3598351.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_276d3c03b4504be19a1ccddf857fb248.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b11fb9b6e82542b783bc017fea5d10af.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9f6098a780084613aac26b7d57425968.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a382ee_75380ac191e5449b8b17c5b9ccfd17e3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8bbd7_223591c7d9f14a5cbbe81304a509c3c1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3f4f84a6a05a415fadeb236f94690782.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/760101_e3802c650af445e49780591a6b4be838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3041/2454/files/45248622030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7407/6315/files/navy_advancement_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7487/1711/files/filubizufovizuwiwujata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2314/5896/files/bamuboralegevatudozawed.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_421e14b7ca234560853dc5bebd232cee.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_fef08631cb184895a3de57d13cc79efe.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_off00006983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6983 5600 bytes
SHA-256: 8f8281bbfb78e1a3bd0368d95a62fdc564402888fb6b6097c99eb7f33aecc489
font_01_sfnt_off00007c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C34 12272 bytes
SHA-256: d58e3d0c1ab4634d45a87e84b513d3b275819cae89cf3a4404d699d58bd4184f
font_02_sfnt_off0000a26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA26A 16080 bytes
SHA-256: bf2bb651642035a19e1b8bf5dc55c4db7948913289cd11d1f66f0c65c0fed8c7

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