Malicious PDF — malware analysis report

Static analysis result for SHA-256 941744b504b1dc89…

MALICIOUS

PDF

44.1 KB Created: 2020-10-15 20:20:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 66e207c2d7cce84972831c62dee97b14 SHA-1: cfa4c92c83dbc37d99658b42726ab626bd890ec4 SHA-256: 941744b504b1dc890bfce8aa35af4de56dda17ea4fa660c28dfb0a88679216b6
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://gettraff.ru/123?keyword=tetanus+vaccine+schedule+pdf In PDF document text
    • https://site-1048522.mozfiles.com/files/1048522/juzumivisinumij.pdfIn PDF document text
    • https://site-1042684.mozfiles.com/files/1042684/rogobowi.pdfIn PDF document text
    • https://site-1039131.mozfiles.com/files/1039131/doboborabusu.pdfIn PDF document text
    • https://site-1043489.mozfiles.com/files/1043489/53748923184.pdfIn PDF document text
    • https://site-1043096.mozfiles.com/files/1043096/50302376448.pdfIn PDF document text
    • https://site-1039875.mozfiles.com/files/1039875/gimowigutowoxepune.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/70642560815.pdfIn PDF document text
    • https://site-1041076.mozfiles.com/files/1041076/cast_from_pc_to_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368494/normal_5f887d4d9ea22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f87770e240ff.pdfIn PDF document text
    • https://site-1043332.mozfiles.com/files/1043332/wodipunepi.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/45293363546.pdfIn PDF document text
    • https://site-1040977.mozfiles.com/files/1040977/83295860308.pdfIn PDF document text
    • https://site-1038675.mozfiles.com/files/1038675/44312471231.pdfIn PDF document text
    • https://site-1040615.mozfiles.com/files/1040615/xegogu.pdfIn PDF document text
    • https://site-1039703.mozfiles.com/files/1039703/nexaxedaxobexusu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4755/8563/files/xirolubavamiten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7115/2023/files/kiliruposozirofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9603/9833/files/collapsing_toolbar_with_image_and_text_android.pdfIn PDF document text
    • https://medlineplus.gov/tetanusdiphtheriaandpertussisvaccines.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_off00006fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA6 5156 bytes
SHA-256: e5234e8ebe32412ed91e9f07923765d99cfe7403406e410f5f8c2e93e0a6616d
font_01_sfnt_off00008135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8135 10004 bytes
SHA-256: f22eb940de321fee0635bbde32c61e88b9343741842ef884292e0cd6e5c9278e

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