Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2902d88717fd72…

MALICIOUS

PDF

34.9 KB Created: 2020-10-30 22:03:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 16a9b39b041d28b8b43c4b57c9e60b94 SHA-1: b88c5ab7eeca388d181052d8b1075fc6540091e0 SHA-256: ae2902d88717fd72c41daa822e759a956afb1636716dcba9220d80dee7f271f4
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.me/123?keyword=witchcraft+in+the+pews+book`. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the redirector suggest an attempt to lure the user to a malicious site, likely for phishing or further payload delivery. The document body, though heavily obfuscated, contains references to URLs that are also listed as embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.me/123?keyword=witchcraft+in+the+pews+book In PDF document text
    • https://gewusepisegetu.weebly.com/uploads/1/3/4/4/134492884/sezuforuvilolulejob.pdfIn PDF document text
    • https://xigeworimejol.weebly.com/uploads/1/3/1/4/131483719/7582b93cb050cc.pdfIn PDF document text
    • https://rirubonoji.weebly.com/uploads/1/3/4/5/134528367/weromulivili-wajututel-lixasa.pdfIn PDF document text
    • https://xefosujusiro.weebly.com/uploads/1/3/4/0/134042031/3910558.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417526/normal_5f99286bb2861.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/39445730679.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/bcom_1st_year_books_in_english_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68ec08b3-4cbb-4e80-84fe-6d6b1b4dc3c2/49028888760.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/negative_exponents_worksheets_grade_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4dd9e6d-467e-4c8d-becf-e5de1bc5e181/nurug.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/musculos_rotadores_de_cadera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fed967f-b4a4-4f3d-ae51-36d66d32e58f/calefon_universal_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/345b5587-430c-48d4-9ac2-2533d6702fff/burumurubamofomowanetozoz.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBF 5380 bytes
SHA-256: 819f49a631ccd958ca0aa8c150b07ac6aa03c069b399aa056b6f078d9a078c4c
font_01_sfnt_off00005e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E22 9644 bytes
SHA-256: d71eb36763eba51f464507ced526b4cba4e340d7e69faaa19744c0131dc00532

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