Malicious PDF — malware analysis report

Static analysis result for SHA-256 299493d768a90d7a…

MALICIOUS

PDF

48.2 KB Created: 2020-10-07 03:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c2f54fd2461c0a4ef546ee8d977880df SHA-1: 9035874917635b7784817d70597165a43be2dfe2 SHA-256: 299493d768a90d7a136facf3942aacd7426b9ca6e2b346aee7f598671c4c1504
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.link/pify?keyword=crime+city+detective+mod+apk In PDF document text
    • http://files.thevillageshala.com/uploads/1/3/1/8/131871569/valipatuda_vuxatev.pdfIn PDF document text
    • http://zizuka.americanrosebridal.com/uploads/1/3/2/7/132740930/nofubus.pdfIn PDF document text
    • http://files.netherlandsandcoloniesrevenues.com/uploads/1/3/1/6/131606111/gawad-ranesutafanume-savulo-tubofefavate.pdfIn PDF document text
    • http://files.cascadecavaliers.com/uploads/1/3/0/9/130968961/8732006463.pdfIn PDF document text
    • http://files.vedajess.com/uploads/1/3/1/3/131380612/25a3fe8bb350a9.pdfIn PDF document text
    • http://files.almosthomecare.com/uploads/1/3/2/6/132680955/tomaropego.pdfIn PDF document text
    • http://files.bigislandeventrentals.com/uploads/1/3/1/8/131871583/badub.pdfIn PDF document text
    • http://files.talesntangents.com/uploads/1/3/2/7/132741556/e1786fe0f691.pdfIn PDF document text
    • http://files.bomberosvalladolid.com/uploads/1/3/1/3/131380008/288b8b22c0.pdfIn PDF document text
    • http://tusefofox.michellevelvin.com/uploads/1/3/1/4/131406289/fb2bc6afb33bf1e.pdfIn PDF document text
    • http://pejiru.zeldadoll.com/uploads/1/3/1/4/131453109/1149980.pdfIn PDF document text
    • http://gobov.bkskincare1.com/uploads/1/3/2/7/132740515/zaxuropofelewuteja.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
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E1 3068 bytes
SHA-256: 5d3cbfd0ab3b3ef2ef533833b6eea2ce28ad6245edfd8880dba73a4eaabddb7f
font_01_sfnt_off000063a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A6 4940 bytes
SHA-256: 856b2b64d074e3d4d84088f8de3d43f04c3b5670f61031942405a10545ecb6ae
font_02_sfnt_off00007479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7479 3596 bytes
SHA-256: c69eab94ec20bcc70f5b6be61c0115cf38e9bb4bd83277be745e584b18393080
font_03_sfnt_off0000828b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828B 10120 bytes
SHA-256: 2c5c5555b9663c35ddea06e0565adf32f9a10ce094dc6f708abd351bb7236e2d
font_04_sfnt_off0000a52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA52A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3