Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f74f71ad8772848…

MALICIOUS

PDF

42.8 KB Created: 2020-11-08 17:44:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 1dc941338f0ef85557e2bf165743129d SHA-1: fea13c57a6917202924c5c629eca13299091c219 SHA-256: 6f74f71ad8772848981be1d887c5abc658bb0f8176e8230d4ad3d99a99aa3694
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://traffmen.ru/123?keyword=subordinate+conjunction+list+pdf In PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/tebifosekafotuwaw.pdfIn PDF document text
    • https://jirewolekaza.weebly.com/uploads/1/3/4/3/134387643/pijomajiworanuri.pdfIn PDF document text
    • https://lifeweroni.weebly.com/uploads/1/3/4/3/134358493/joneduxizo.pdfIn PDF document text
    • https://jobubati.weebly.com/uploads/1/3/1/4/131453688/3770832.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/nidisetati.pdfIn PDF document text
    • https://wunamixexot.weebly.com/uploads/1/3/4/4/134456109/8894685.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/plate_tectonics_multiple_choice_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rimadefule/auradon_travel_guide.pdfIn PDF document text
    • https://baludas.files.wordpress.com/2020/11/star_wars3a_age_of_rebellion.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/vesoza.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/lekaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca9b04d1-5faa-465c-8e5b-09f54529ff6f/404715341.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_off0000672f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672F 5468 bytes
SHA-256: a83842f069971cefb968053a1e5f176f27b8df12b0e7ed491621e6e71a20f606
font_01_sfnt_off000079d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D4 10688 bytes
SHA-256: eedf78735dcac36a11b548a2e423e370de452aaea5a4478133b975aa09e8a148