Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59dc7cb2bf1add2…

MALICIOUS

PDF

46.4 KB Created: 2020-10-15 16:28:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: af54c0a1da97c637db741725f4a98afb SHA-1: a363fb32f259dce17e219d0bf04d9cb8756c0799 SHA-256: b59dc7cb2bf1add2dfb811d7f0b514c170850df8b993696c18879731ae924cbd
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=learnership+2020+application+form+pdf In PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/378398.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/6023986.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/9225f5590a2.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/mezuber.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/93049f265a0000.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/c8a358dd5c9b.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/bibesekukemugedovofa.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/wabuvavinilexe_tisipojosare_porufibavuga_laxap.pdfIn PDF document text
    • https://site-1039413.mozfiles.com/files/1039413/49205665322.pdfIn PDF document text
    • https://site-1037114.mozfiles.com/files/1037114/39224400641.pdfIn PDF document text
    • https://site-1042101.mozfiles.com/files/1042101/free_printable_preschool_valentines_day_worksheets.pdfIn PDF document text
    • https://site-1042434.mozfiles.com/files/1042434/bus_sim_apk_mod.pdfIn PDF document text
    • https://site-1042598.mozfiles.com/files/1042598/13808106273.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/7b096817-46fb-4fb9-8a80-2e45797d0b36/42339919152.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62faea88-9b51-4570-9190-6cbd132e371a/zikekepuzijajowonetiwod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04aeb833-63d5-4ec7-b659-d5996597d9b8/77983498708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84acac82-b505-49ea-a1f5-2a6b18b15056/waziraminogelopaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0728/5147/files/loomis_body_armor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7040/0928/files/lawn_tractor_trailer_dolly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8599/7241/files/runescape_temple_trekking_leveling_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2315/4850/files/bokutachi_wa_benkyou_ga_dekinai_manga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6242/2421/files/43348983888.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_off000075a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A1 5612 bytes
SHA-256: e705d95849e0831d7a8fe0baeabf38c34cba257d3da998ad7eb8dccc366ab074
font_01_sfnt_off0000887f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887F 10420 bytes
SHA-256: 644b6cca390fac00ec41d3e0c157c9af7dde24bdd3cb49c2a95c3b0120cade35

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