Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c3af80ec98f7cdd…

MALICIOUS

PDF

42.7 KB Created: 2020-10-15 14:39:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e668f71069c2f195bef88d0ef0cceab4 SHA-1: dfc22c921b9433f3bff2b815bc723e61f1ded1fb SHA-256: 6c3af80ec98f7cdd12ff3e364e73c65a60fa606117189821cb0bf47b7febb769
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://gettraff.ru/123?keyword=tai+game+ninja+school+1+offline+android In PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/48afb0ac.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nojof.pdfIn PDF document text
    • https://waniremupamed.weebly.com/uploads/1/3/1/4/131407535/b6f37a.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/6e49bf7bc2.pdfIn PDF document text
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/3c0d22f9ea77.pdfIn PDF document text
    • https://site-1041413.mozfiles.com/files/1041413/nasujeburulimilibofagi.pdfIn PDF document text
    • https://site-1038556.mozfiles.com/files/1038556/41063553546.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/a5dfb193-7e65-4e70-9f74-ad038c64a2ad/mawalelejowabiro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9cfc814-daba-4191-af1c-85c586862a21/76797147151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f2447d4-2585-4595-b13a-cf991e5cd9da/84398958560.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50bb35c3-0767-4fd0-a3d4-dbe805115942/mowanifolonoxaramak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3032/1568/files/38895013020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3366/files/pofazifaruwitasemenidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4051/7538/files/fofokibis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8979/6513/files/seleccion_de_el_salvador_partidos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2626/7816/files/how_many_calories_in_a_california_roll_with_avocado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2386/8319/files/mesa_boogie_recto_verb_25_combo_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0642/5249/files/15892621986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b87f5b1c-dcfa-4c27-aac2-0585def7cc81/75358923984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a5922ff-9db5-4e55-a359-2353973018e7/borogubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3f8b41f-eb12-42cd-98ab-46a6be8777e3/womotewatitiwawukedasew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f402953f-b1ac-40d5-8f58-3223b87ae749/lakemovovojobawima.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_off00006696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6696 5512 bytes
SHA-256: f5cab8c85908085aa2137ca1d7be68048cc1a4b49bf33c20653e599d4e4200c0
font_01_sfnt_off00007931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7931 11156 bytes
SHA-256: b48a0428de6e472ddc40bb7eb921ad445fe94d4151ceadf9bbf6113f2c70c159