Malicious PDF — malware analysis report

Static analysis result for SHA-256 1811473e7f6c5e13…

MALICIOUS

PDF

70.4 KB Created: 2021-02-26 13:35:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 16f803569a3c22d33606273a45e2a203 SHA-1: fec9ca56bb5799f0081b5f6e7bd890a1d6880759 SHA-256: 1811473e7f6c5e131d4d78a95a1d1d5d83eedbf0984f8762e17009a334a04558
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/award?keyword=que+harias+si+no+tuvieras+miedo+sinopsis PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445881/normal_5ff5288d4a0b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_601b458cd23d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448121/normal_6028197707ccb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373241/normal_5fea3c1d120a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494139/normal_5ff68997cbab8.pdfIn PDF document text
    • https://wezenazuzive.weebly.com/uploads/1/3/4/7/134764498/95e48f5.pdfIn PDF document text
    • https://wagigezo.weebly.com/uploads/1/3/0/7/130775958/vexekavosajon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482848/normal_601152593b1eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386607/normal_5fc7798799517.pdfIn PDF document text
    • https://tadeliganunuzax.weebly.com/uploads/1/3/0/9/130969808/457582.pdfIn PDF document text
    • https://cdn.sqhk.co/jonimaze/MHoifHR/fast_button_clicker_game.pdfIn PDF document text
    • http://rabota-plus.club/clyde_helms_radiologyfd58r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460706/normal_5fccf64de8e49.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/zepifudoxapo/wezonakewinikugibelepo.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_off0000d436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD436 5288 bytes
SHA-256: 2921c086ed7dd14d814c1c2f1a07fb060aab2692c54183db7f2c470ed78908cb
font_01_sfnt_off0000e609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE609 11312 bytes
SHA-256: 49b5df8e274c00ca0efb804bbc3a9803341624cb1daa91e312a46ae9f1524238