Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ee4e83903bfe50…

MALICIOUS

PDF

42.2 KB Created: 2020-10-31 09:15:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bf22fa276c2841b4785ec12af87b01af SHA-1: 908933cfbb9f07f423d182ab7ea2adf379b64ff1 SHA-256: 70ee4e83903bfe50b08317c5e7c996c5db0e0134ed2b0c19424661946d6df0fb
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://ttraff.com/123?keyword=great+dane+mix+puppies+for+sale In PDF document text
    • https://jifefovemerozix.weebly.com/uploads/1/3/4/4/134444698/3882141.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393751/normal_5f98df46c1f41.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/duzexefemosaxe/ate_ve_su_kitab_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ce908ea-1a56-43ad-bd15-78d7f7db212b/ketoremetupefapuxumegixug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6747/1538/files/jupiter_aries_12th_house.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7ca8ca5-4deb-473f-bd74-2a84337df323/karanln_elli_tonu_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b91e31bb-c375-4349-916e-7b6f6d4b23e0/48727778630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6775/4646/files/vlc_download_for_android_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab0e70aa-72ff-429b-8241-afcc8d9862ea/como_se_realiza_una_ficha_bibliografica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1875/0616/files/guitar_pro_5_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d219b0e6-9b87-4a19-b643-acd423298b20/diseo_de_elementos_de_maquinas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/bartlett_lake_fishing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/7678219208.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_off0000659d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659D 5284 bytes
SHA-256: afad6778a6676524a074d62e04aa3397a9b4e96496904d32fd3f43e406e1ba64
font_01_sfnt_off00007787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7787 11244 bytes
SHA-256: 62b67953641ec16cfb475613dffb9f48f5d1a26775643eecbde3fb99724f24cb