Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba213541001fbb21…

MALICIOUS

PDF

46.4 KB Created: 2020-10-16 06:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 69aa08f673a59a7b390f100b1aa026b7 SHA-1: 5ba68ef3ed8715e75431bc43250272f736070889 SHA-256: ba213541001fbb2142a2b132254d7adb111a1f1e17d0043b2774603a097f24a5
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/pify?keyword=elgato+hd60+manual+pdf In PDF document text
    • https://site-1037253.mozfiles.com/files/1037253/xeselagujarekemorezu.pdfIn PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/bigavaxalisixeboxo.pdfIn PDF document text
    • https://site-1042584.mozfiles.com/files/1042584/cross_court_tennis_1_apk.pdfIn PDF document text
    • https://site-1039762.mozfiles.com/files/1039762/44196299970.pdfIn PDF document text
    • https://site-1040180.mozfiles.com/files/1040180/lawosusanigodura.pdfIn PDF document text
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/20d8b.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/5595580.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/4280489.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/zunejiwenuja.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/a4b7f02d-a766-4776-9ed5-27fed37ccb0d/89425113686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f83f46d-3270-4a0d-a2b0-f384bcaf8475/24682351419.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83c1f4f5-5b7c-4a91-9785-c412b9497ec6/rumupotoripefemigetepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6dee374-caad-4514-a84a-56876f9ecbe4/72862695745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2e5a1a6-5a7e-4e17-a673-882f86208d39/xadusetagujojefuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a898b42-5c28-4f2d-a905-12ab12e9ca70/56062177687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59b3b900-7667-4726-8329-1879817331e0/97796409774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7952/3240/files/xisewikunukeremopudezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7835/6644/files/dashing_diva_magic_press_vs_impress.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2331/1263/files/dirixoxalamigibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2113/5783/files/86914060813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5316/9826/files/pathfinder_kingdom_building_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9461/3410/files/area_perimeter_missing_sides_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2469/7509/files/wisasevobabariwanak.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_off00006f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F85 5436 bytes
SHA-256: 9c3ac4d75a2caf59837310e8ec2c1b11c89478ba7295144221f82f903abed995
font_01_sfnt_off000081e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E6 13300 bytes
SHA-256: 70be151b40d2456a9a9e0f6ece3f1b1ba6a10341f103d378354eac0be1b9f444