Malicious PDF — malware analysis report

Static analysis result for SHA-256 602ee03851d1a7c5…

MALICIOUS

PDF

31.4 KB Created: 2020-10-30 09:38:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a667bb8d74034457834d9dc8aa75c571 SHA-1: deaf0cc51cae155a32c817190c5a5772eb53075e SHA-256: 602ee03851d1a7c510d02e05d2bf88a91bf772a4f7d4a17a94608f511cc1b07f
94 Risk Score

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://gettraff.ru/aws?keyword=geisel+library+desk+hours In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_5f97600088db9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384839/normal_5f96eb43ed78c.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/f05af64111af98b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377717/normal_5f9a6b9161c90.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/gupuso/19263756110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7319/files/vabifokelaneniwiwuredaj.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/spring_concert_umass_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2821/5483/files/johnny_mack_brown_wife.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/prayer_attahiyat_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7069/9160/files/kolhan_university_migration_form.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/blue_window_play_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01b9f144-b065-4d04-ac78-89d55a78ca36/nefup.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/rofidapekuwene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7db281fe-05d0-415d-8140-fa15ad88dca4/56430033714.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_off00004112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4112 5248 bytes
SHA-256: 39acef1f4e2d5798091c3edc6bb56d8d4b03006c64166ea67b463e131e1ecf3d
font_01_sfnt_off000052e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52E7 9068 bytes
SHA-256: 058c0493f3e338198b0566dee8d0dd4ca8a82704c2824d2ba823bf28567a3476