Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a098d6d79b0bb1f…

MALICIOUS

PDF

44.1 KB Created: 2020-10-03 02:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8f54ae3af3614d5c725779b597571834 SHA-1: f99918f85022f7c2449ce95101351a0a19df4cc2 SHA-256: 0a098d6d79b0bb1f08d4ecbd9fafa83f5dc9068f508cf1246aa5fff8ea1d37bc
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://cctraff.ru/strik?keyword=amai+choubatsu+watashi+wa+kanshu+senyou+pet In PDF document text
    • http://files.missdabbeekeh.com/uploads/1/3/1/4/131437061/mubogirutajekir-zevajem.pdfIn PDF document text
    • http://files.rlc-scottsdale.org/uploads/1/3/0/8/130874655/d254791311cc.pdfIn PDF document text
    • http://files.naleokakoo.org/uploads/1/3/1/4/131453015/sumut_pawavufapi.pdfIn PDF document text
    • http://bakovo.beyondessentialoil.com/uploads/1/3/0/7/130739415/vewus-dexomudunek.pdfIn PDF document text
    • https://site-1036956.mozfiles.com/files/1036956/nukovude.pdfIn PDF document text
    • https://site-1040216.mozfiles.com/files/1040216/ninajufo.pdfIn PDF document text
    • https://site-1039311.mozfiles.com/files/1039311/gulufuxarugak.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/41004740643.pdfIn PDF document text
    • https://site-1037079.mozfiles.com/files/1037079/84944704989.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/db537a41-b8f4-49f9-a34a-c03753efd68f/99947449028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c015abf-1819-4302-91ae-39f9331c731b/xesusenuwivum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82e913b1-5d9b-4670-81e7-85715680efe8/53210425609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6676357-db99-4fd7-bf3f-80ce663cb4a9/sibufovugobuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0ed28b1-a7b1-4de8-b83a-b2799bc06bd5/97590031357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0652/0226/files/fimexitunodas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/46891455989.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4811 4876 bytes
SHA-256: 558eac7ee8a6f4965f16b1a93ea4c149d8dd07297fec20196118c1ddff2b98d1
font_01_sfnt_off000058f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58F2 5432 bytes
SHA-256: 599105a33043e40d07784f65f34d172c743e5d9b26d8c89d9d4e8d0d9a4352a8
font_02_sfnt_off00006b57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B57 10200 bytes
SHA-256: b7df6501d32bfd31a9df825e91c6937a14539435ef73a146002d8ee35ff1f9be
font_03_sfnt_off00008dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAE 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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