Malicious PDF — malware analysis report

Static analysis result for SHA-256 73eeaf7fb9008b74…

MALICIOUS

PDF

52.9 KB Created: 2020-10-15 05:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 317cc218a8621d5bc05a3a5b32098fd6 SHA-1: 2af3e1dcf9db1767a7396837db25f164ddfe9c31 SHA-256: 73eeaf7fb9008b743337b8d013c55607587255f4ffb5f36b2436fbafdcc70c13
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://ggtraff.ru/123?keyword=pokemon+alpha+sapphire+pokedex+guide In PDF document text
    • https://site-1044113.mozfiles.com/files/1044113/zibozizezoda.pdfIn PDF document text
    • https://site-1036694.mozfiles.com/files/1036694/65037222127.pdfIn PDF document text
    • https://site-1042767.mozfiles.com/files/1042767/lalexikalibaru.pdfIn PDF document text
    • https://site-1040094.mozfiles.com/files/1040094/41311918257.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5f876daa86095.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f86f414cc3ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f871e33c2559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f87524f349e1.pdfIn PDF document text
    • https://site-1036626.mozfiles.com/files/1036626/gemavanawilemules.pdfIn PDF document text
    • https://site-1044197.mozfiles.com/files/1044197/mofowe.pdfIn PDF document text
    • https://site-1038758.mozfiles.com/files/1038758/24331757487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5f8724844b0eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368468/normal_5f87ab1c58d02.pdfIn PDF document text
    • https://site-1040512.mozfiles.com/files/1040512/jewogereminupe.pdfIn PDF document text
    • https://site-1038497.mozfiles.com/files/1038497/14077094488.pdfIn PDF document text
    • https://site-1043808.mozfiles.com/files/1043808/lagekezur.pdfIn PDF document text
    • https://site-1039224.mozfiles.com/files/1039224/lebuvavazopipabopawo.pdfIn PDF document text
    • https://site-1042765.mozfiles.com/files/1042765/dulidove.pdfIn PDF document text
    • https://site-1043686.mozfiles.com/files/1043686/sukesufawodor.pdfIn PDF document text
    • https://site-1043170.mozfiles.com/files/1043170/28365975825.pdfIn PDF document text
    • https://site-1039162.mozfiles.com/files/1039162/71788501801.pdfIn PDF document text
    • https://site-1037894.mozfiles.com/files/1037894/fuzomojamunovofaponom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00008fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE2 5504 bytes
SHA-256: adcfb6563b8a204ce5c101936ba669994a3f8f585954e163e2800aa8a52892ce
font_01_sfnt_off0000a26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA26F 10408 bytes
SHA-256: 48f44ba28a3f220650a1bb5b194c0b7f786d3bccdbbff739278945c215bff3e9

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