Malicious PDF — malware analysis report

Static analysis result for SHA-256 11dfd967ddf9e2da…

MALICIOUS

PDF

45.0 KB Created: 2020-11-07 03:11:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-10
MD5: 0609bd4c2c6e994fa00379baad64334d SHA-1: 9b448d801c51006136464e575ef6818aafeb2c21 SHA-256: 11dfd967ddf9e2da9688ce81e459adfc68a6f406a8f92d957ab715b8200bdba1
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=ppsspp+emulator+gold+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379614/normal_5f8d8b3ff109d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383579/normal_5fa5d167d1624.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006df1.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006df1.bin)
    • https://s3.amazonaws.com/juvuraguvutoxif/sssniperwolf_merch_official.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/0xc000012f_error_in_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/mutant_fighting_cup_2_unblocked_77.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/bababemifuzorojapeze.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/11018768847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d6bc778-ba39-4807-92d2-0fe289f322b7/97284300563.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/autocraft_u1r_2_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/mortal_engines_dvd_release_date_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/ralekitonaxux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a637587-7afd-470b-865f-7a3e86ecf760/39365371886.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/tecnologas_biomtricas_aplicadas_a_la_seguridad.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_off00006df1.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF1 5344 bytes
SHA-256: 53800d49b7108afa216b19ea2a28a271434be3a4cb6a0429a56a8d46e69de569
font_01_sfnt_off00008002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8002 11804 bytes
SHA-256: 98eec19716f93f1c5bb32069625f77794541f89ab51725e979099648e78395b5