Malicious PDF — malware analysis report

Static analysis result for SHA-256 956b469ea854aeb0…

MALICIOUS

PDF

42.4 KB Created: 2020-10-15 07:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9247bd2bd9789a3d4ef9eed068207c32 SHA-1: 2b8e6dfda8eac2f53bb7dce52c0500c3ceb3d4da SHA-256: 956b469ea854aeb0f1fce472c2fe67e3eb6cf1e04e239a551edf592188325010
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ggtraff.ru/123?keyword=gta+5+gunrunning+business+guide In PDF document text
    • https://site-1038575.mozfiles.com/files/1038575/tesilupiwasulatovaxuf.pdfIn PDF document text
    • https://site-1038830.mozfiles.com/files/1038830/98198517066.pdfIn PDF document text
    • https://site-1040424.mozfiles.com/files/1040424/fuzinugusopulamej.pdfIn PDF document text
    • https://site-1040615.mozfiles.com/files/1040615/27562507036.pdfIn PDF document text
    • https://site-1036956.mozfiles.com/files/1036956/83189752116.pdfIn PDF document text
    • https://site-1036800.mozfiles.com/files/1036800/75861778835.pdfIn PDF document text
    • https://site-1036956.mozfiles.com/files/1036956/xumatikenabojiwitumaw.pdfIn PDF document text
    • https://site-1038384.mozfiles.com/files/1038384/jakavuviwunagotedo.pdfIn PDF document text
    • https://site-1036724.mozfiles.com/files/1036724/vafafotelufoxaful.pdfIn PDF document text
    • https://site-1042584.mozfiles.com/files/1042584/75859190865.pdfIn PDF document text
    • https://site-1043218.mozfiles.com/files/1043218/luverapurimapogokivewaf.pdfIn PDF document text
    • https://site-1040507.mozfiles.com/files/1040507/kamirifusadusado.pdfIn PDF document text
    • https://site-1048166.mozfiles.com/files/1048166/gps_joystick_fake_gps_location_apk_mirror.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/1766028.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/jogowezokuvaxu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1702/6715/files/unsquare_dance_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4540/4327/files/mazewesaviga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2888/1823/files/blue_table_painting_store.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6051/0376/files/wow_enchanting_guide_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0960/5273/files/lezawukixikagifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e62e90f5-cd48-417a-9b84-105f933a9cb9/804618400.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6df94121-59e0-49b2-b237-09b18c3e68ac/nupuras.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd295963-4fa6-41e3-a301-0fa479ab4549/jojomu.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_off0000674d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674D 5256 bytes
SHA-256: 623611e0127987ca8ff3b0a9a3a430a1af4cd2af09599394723df050f1fcd520
font_01_sfnt_off0000793e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793E 10260 bytes
SHA-256: 445d19bcf3bb382f192966655bdb760135bba7d300d58511ddd4a89c20e999fe

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