Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa8f405870bc7b2…

MALICIOUS

PDF

46.5 KB Created: 2020-10-08 07:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 21bebdf7131fb6c08aac624447939515 SHA-1: 3f0dc043e256c943a68bbc3d12e35231209646c1 SHA-256: 9fa8f405870bc7b27cb67a2b09b39fa8557a402d1a54c9cb3832ca1869027f2b
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://ttraff.club/pify?keyword=bose+companion+2+series+iii+review In PDF document text
    • http://files.solentmx5.com/uploads/1/3/0/7/130738955/vanepuwugamisu-patulipunevap-viguvupavo-fobab.pdfIn PDF document text
    • http://files.co-created.org/uploads/1/3/1/3/131398059/kajefivozedakidasip.pdfIn PDF document text
    • http://files.tinkscience.com/uploads/1/3/1/6/131607866/fitubimijanabugan.pdfIn PDF document text
    • https://site-1039959.mozfiles.com/files/1039959/19987183859.pdfIn PDF document text
    • https://site-1037026.mozfiles.com/files/1037026/58244156199.pdfIn PDF document text
    • https://site-1039846.mozfiles.com/files/1039846/ruremilewodivutoruwobe.pdfIn PDF document text
    • https://site-1038478.mozfiles.com/files/1038478/52106160992.pdfIn PDF document text
    • https://site-1038682.mozfiles.com/files/1038682/90035962753.pdfIn PDF document text
    • https://site-1038908.mozfiles.com/files/1038908/67411774871.pdfIn PDF document text
    • https://site-1036680.mozfiles.com/files/1036680/radunomude.pdfIn PDF document text
    • https://site-1039217.mozfiles.com/files/1039217/zabovulitules.pdfIn PDF document text
    • https://site-1038782.mozfiles.com/files/1038782/zozawekapibiraji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/140c1553-082e-4c96-a70e-f4a8eff6546c/sidarezipoxajovugupi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/226173a9-f243-49c3-80cf-6d7a4ec0b4ab/fujosajal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6783 5088 bytes
SHA-256: 6dbec17d24a1ab46535a3e986e4509b7d14edb6c18d3d6f41736d273d4819c69
font_01_sfnt_off000078b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B5 11008 bytes
SHA-256: 96cf6a48214636682fda9652baf001530973fce84ad23b4bb84ee6ce8210a067
font_02_sfnt_off00009d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D89 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3