Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd86a7d22095295d…

MALICIOUS

PDF

50.8 KB Created: 2020-11-08 11:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 3955b63a0df4e53815e3ccfef92b1936 SHA-1: 972a00ad590a717c89ade5d96b67e22affc960b9 SHA-256: fd86a7d22095295d45fdc958c5e4846bdd5359608382450e2164023a069fdd60
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=dentistry+merit+badge+answers PDF link annotation
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/e6896d39a.pdfIn PDF document text
    • https://jijalasigode.weebly.com/uploads/1/3/4/3/134344414/5b36e689146e8.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/02bdd58e-67d0-4729-9b58-7ba7214efdef/rialto_square_theater_box_office.pdfIn PDF document text
    • https://vusesalo.files.wordpress.com/2020/11/artificial_intelligence_with_python_tutorial.pdfIn PDF document text
    • https://xixunetov.files.wordpress.com/2020/11/52861535426.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/23841751816.pdfIn PDF document text
    • https://suvarofora.files.wordpress.com/2020/11/lodebukiworidu.pdfIn PDF document text
    • https://kugudad.files.wordpress.com/2020/11/22665721831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c17c27e-159e-4630-947c-a643c2c3e9ca/komopazosuj.pdfIn PDF document text
    • https://tijupojis.files.wordpress.com/2020/11/32535985784.pdfIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/reremuradivuvevedivogobid.pdfIn PDF document text
    • https://vivuvegutofo.files.wordpress.com/2020/11/71330355521.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDB 5444 bytes
SHA-256: 3d2f551bfb67eedb00b49b0dffcc9a7a1e28713b91b261c5d29cc4ec18e2e07e
font_01_sfnt_off0000815e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815E 11824 bytes
SHA-256: cdf5bc22f28132432215b558a8ce85767e8e9c534ad67d56148f98bce415883b
font_02_sfnt_off0000a922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA922 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e