Malicious PDF — malware analysis report

Static analysis result for SHA-256 dac3de405fc25af5…

MALICIOUS

PDF

41.1 KB Created: 2020-10-04 11:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d0bdb2c3daec2ac4396ca26e10243e0f SHA-1: 06976d1b7a3e9a7a26f5813737ded49fed326c1e SHA-256: dac3de405fc25af5d05259cd3bac604a49e504de702a0e8215f8f4dad962c06d
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/strik?keyword=intercambiadores+de+doble+tubo+venta In PDF document text
    • http://files.bevpurduefineart.com/uploads/1/3/1/4/131453253/4135604.pdfIn PDF document text
    • http://files.mrsvoigtsclassroom.com/uploads/1/3/0/8/130874610/vuwovagafarosi.pdfIn PDF document text
    • http://direbaka.ysk-chb.com/uploads/1/3/1/4/131406676/tamazemowesojimidal.pdfIn PDF document text
    • http://zepalebo.tracychamberlainstillman.com/uploads/1/3/1/4/131453109/326f8ad9fa19.pdfIn PDF document text
    • https://site-1036713.mozfiles.com/files/1036713/36922855028.pdfIn PDF document text
    • https://site-1038304.mozfiles.com/files/1038304/wukob.pdfIn PDF document text
    • https://site-1038475.mozfiles.com/files/1038475/luxewulojozoletorilamuk.pdfIn PDF document text
    • https://site-1037261.mozfiles.com/files/1037261/82985029215.pdfIn PDF document text
    • https://site-1037114.mozfiles.com/files/1037114/gaxim.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/3a96c234-1a15-461b-82a3-de6e74119683/21201782761.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/837b8b5d-c731-4a99-bc22-4d6bba6b8403/kixoxonuzukixuranesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6655/5556/files/fomavafexewunufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9449/9743/files/robb_stark_battle_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4249/0526/files/vumaroluruluzoxabefot.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_off00005fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCA 5220 bytes
SHA-256: 3be65af697bb4bf205fef72f6f755b73c9bd9c2577535f471270d856d4d2c141
font_01_sfnt_off00007174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7174 11188 bytes
SHA-256: d7476f4ea507f55eeeb8fa6e0daba4f3ea04d983cf484a48213081813e411d9c

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