Malicious PDF — malware analysis report

Static analysis result for SHA-256 89435ef0e9976021…

MALICIOUS

PDF

41.7 KB Created: 2020-11-05 02:36:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d0d99cefe6942a36a6d6027ec0996f87 SHA-1: ca44229b77681f563d2a8ff3d94dfced2cc78c40 SHA-256: 89435ef0e9976021e457a5f106e6b4301d4df843d2f5476c0f3b9d4bf0fb2e5f
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded URL, https://ttraff.cc/123?keyword=hamilton+county+auditor+site, is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

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.cc/123?keyword=hamilton+county+auditor+site In PDF document text
    • https://besajiti.weebly.com/uploads/1/3/1/8/131856076/lebufawinu.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/6820a.pdfIn 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://s3.amazonaws.com/dorobukasawituw/67013612828.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e638c117-4e3f-46c7-8cb7-dac4c66826db/49954058262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/649ed39b-7ce2-497d-a3c5-924baf0b1ef5/808_woodruff_key_dimensions.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/periodic_table_trends_quiz.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/desuwunaziwakerimefoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/108cf7f4-c3d4-43a9-b473-bf9212037456/93555713844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6262e368-7eb3-44d4-af52-bf0b924f5a08/take_5_guitar_chords_dave_brubeck.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57DC 5028 bytes
SHA-256: 7640e0f70d06fd4e4f49437ffbee3d0f59d49246ab0694c9e5c4f7f96da107f3
font_01_sfnt_off000068d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D4 10500 bytes
SHA-256: 3293ce0762dc9807d2ddedd4b99205ff89d7ad374a0a1c810fa45a68e3d57759
font_02_sfnt_off00008c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C73 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71