Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5de4023c1d01427…

MALICIOUS

PDF

44.7 KB Created: 2020-10-16 19:11:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 68a650e47f1c91cbe9adb8cc1213b97c SHA-1: aca8c6c7c4b4b68e11822bd67e61297aacce6c57 SHA-256: c5de4023c1d0142796d22271b989a356c9d47b70b4a2ae08a03f70a43edf017e
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://ggtraff.ru/123?keyword=best+car+drifting+games+android In PDF document text
    • https://buxivadoga.weebly.com/uploads/1/3/0/7/130740323/3376562.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/tebavu_mofevuz_punoxibera_gijipomole.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/60aaf24b9477fe0.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/favisaj.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/segetirib_butaregogomej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5f87c00b699cd.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/fapevawoluwojos_ribuz_kixoji.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/3835794.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/1a27643b41869.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f217b5a-f91e-4b11-81ad-f54bddf4494b/mararuvuforovepefila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aba534dc-047b-4fb1-acb3-b8f3f4e03a52/wozofogiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57762da8-9dbb-42e1-b128-27d3d45d6a0a/binezeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a9b6b1-ea4f-42dc-9537-9dfbeffc814a/vajisebisawofub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6203/4069/files/90148639080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0475/3919/1974/files/fifty_shades_freed_full_movie_online_free_vimeo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7136/5804/files/economic_geography_an_institutional_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1167/8623/files/moxie_beauty_bar_nj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2730/3080/files/kozeresapurofixiwosujiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/7451/2806/files/bopiviwakonubewelusiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7951/5291/files/fabubukekenodigikumefa.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_off000070c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C5 5360 bytes
SHA-256: 3afbe797bee675165cf14dfac4cbb112d87df97f67335d1683852f28c42c5350
font_01_sfnt_off000082de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DE 10080 bytes
SHA-256: e9ea41fff35cf735f94e4c66b858604a5ee69cc32534949e1ec4fe2cab664c81

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