Malicious PDF — malware analysis report

Static analysis result for SHA-256 918eb7f065ff4d38…

MALICIOUS

PDF

51.2 KB Created: 2020-10-24 12:22:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 07ff386b092c998cc134ffc6f49817be SHA-1: 6098145fd669bb6df1debf3f0c4a40d0a6eafef9 SHA-256: 918eb7f065ff4d38ae70c3424da26495bef7bf449a70d62606ac54b573f584d9
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://cctraff.ru/pify?keyword=planner+5d+mod+apk+1.19.10 In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/laderote.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/wukogor.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/jidimut.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/diwawekorun_fitekebekulepa.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/fb16dc5a15.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006451.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006451.bin)
    • https://cdn.shopify.com/s/files/1/0429/3797/4940/files/kimagivez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/javoxiwifudobazurinosojit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4212/5997/files/tibizuguxixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48836392-9433-4c6a-a846-cc1420bd408f/descargar_musica_de_alkaline_123_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fdee3d8-a385-4e3c-817f-e1e69b7d0da9/putowikog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d097e0e-300e-4744-87a1-3e64902a4e9d/dijitelegem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3870/2748/files/39970883556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/jufedusujogibigezeluxaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3696/5026/files/zeduzisarud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3879/1582/files/download_daftar_riwayat_hidup_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c34a7971-16d9-493e-84e3-bd71983f9e54/xuredifeselezokulalonam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31c4c8c6-89a7-4ef0-85c7-267a950d846e/43360493444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44881d86-f890-4d1b-aa94-7398f77df270/pokakuzalemalufefanun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b310935-a09f-4ae8-938f-58a74ad401d4/87841188818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad9af31f-fcb5-4142-aa33-a7cf8362afc6/sasikaveg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/161b0585-315b-44cf-b072-63e4dac338f2/af_sosyoloji_sosyal_politika_ders_notlar.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_off00006451.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off0000a908.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off0000a908.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6451 5500 bytes
SHA-256: 971c9f5cc7121724892d53e0e06311fdbb0d26e82a55460b11116dcc97c70330
font_01_sfnt_off000076f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F3 3296 bytes
SHA-256: 5d21184618099142a591678fdbc24334eaf0ce79300fade416e0610d5a8415fc
font_02_sfnt_off0000845e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845E 10680 bytes
SHA-256: 2942dd8e0a0681f1370dbf2e7508600e08773f32bd30107190bdcb6fe28d715f
font_03_sfnt_off0000a908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA908 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb