Malicious PDF — malware analysis report

Static analysis result for SHA-256 918c5a503eb255ed…

MALICIOUS

PDF

51.5 KB Created: 2020-10-30 06:30:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-10
MD5: 649c654884c0c187c76fa4024ff34e97 SHA-1: 4dec272db736b7b1867f4d0e50878c0d7acc66b0 SHA-256: 918c5a503eb255edfa4e0fbe70d4eccdb263e7c23ff7a099d493d9d6e91aa45c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/pify?keyword=pokemon+crystal+emulator+trade In PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/481aec7a.pdfIn PDF document text
    • https://morozosewiveloz.weebly.com/uploads/1/3/4/3/134387595/72505050b4336.pdfIn PDF document text
    • https://jopomewimedadi.weebly.com/uploads/1/3/4/4/134465277/3b9ae.pdfIn PDF document text
    • https://wejakoguxi.weebly.com/uploads/1/3/4/3/134324676/zonoz-kemuxafaka-velover-taliva.pdfIn PDF document text
    • https://kitarenabokuvum.weebly.com/uploads/1/3/4/4/134479912/9132781.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403533/normal_5f95728690ed0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f8749c4eff55.pdfIn PDF document text
    • https://bupaduzisi.weebly.com/uploads/1/3/4/4/134475958/dolofajopumozera.pdfIn PDF document text
    • https://kelipibefis.weebly.com/uploads/1/3/4/5/134500531/190148.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/3873212.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/xazemibe-fupukejik-gadibus.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/3539145.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006681.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006681.bin)
    • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000b26c.bin)
    • https://uploads.strikinglycdn.com/files/20a058c6-234a-4bbc-b228-c7ef093b648f/daduxupaxuxowosogosojug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be7ea469-0398-4458-a262-9d57f99d9d29/karinujaz.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/autopilot_mode_technology_in_vehicles_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb26d8d9-6b08-4305-8166-d87fbbbd2bf0/metal_muff_schematic.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 extracted file (font_00_sfnt_off00006681.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00009d7d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00009d7d.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6681 5084 bytes
SHA-256: e815399a4f83523775eb12adf544233ddddc650b26ec503f9c3ff1ed87f7fa52
font_01_sfnt_off000077b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B2 11096 bytes
SHA-256: 1c8455f2dc43f6d3da8a912b400b6a2f9e005bd151d291ac5ea1d18b23be5554
font_02_sfnt_off00009d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D7D 16140 bytes
SHA-256: 2e2dbd8d40f44e1da00b7f18e1398173a4086b41d4ddf32f7cc12e009e373e5f
font_03_sfnt_off0000b26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB26C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3