Malicious PDF — malware analysis report

Static analysis result for SHA-256 2516f6ebdb7a5355…

MALICIOUS

PDF

39.7 KB Created: 2020-11-01 11:33:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 867513d2c737abf66e8c0b133c9486b2 SHA-1: 1f1178a34cdac14c9abf863e5e32e498fd756af8 SHA-256: 2516f6ebdb7a535589a302e86a678f0d444021a4cf57546cd6100571e1f6dea7
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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=five+wishes+free+printable+copy In PDF document text
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/mutum.pdfIn PDF document text
    • https://mezuxanivatanid.weebly.com/uploads/1/3/4/4/134499991/640562.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d4f1893-cf1a-47cc-b0cb-e5ef20c8c1bd/5516190548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b76c8a2c-01dd-450a-929e-75b1d2e701e2/95686264177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5088/4008/files/mogutivufepu.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/lenovo_thinkbook_13s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c25f46b-09a5-4cd0-8235-9c87f2fe53d1/lusegizulotawefifila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4e9b8de-14bd-47ff-8791-268c22c3e093/24975483532.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/dutobefipuxuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4741/1608/files/sustainability_indicators_for_managing_community_tourism.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_off00005dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCD 5452 bytes
SHA-256: 18436f23fadbb2bc0225fa6dc3bdf3f65497f61be06cc031dce7b915b9b161e4
font_01_sfnt_off0000706b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706B 9888 bytes
SHA-256: 030b3f1c0b0d637f4aab1236494c6f5d755b776c08ac948bbe51191e5d518bd8

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