Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ddd87c0f199416d…

MALICIOUS

PDF

45.2 KB Created: 2020-10-15 16:46:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b331104a198de201e85702d3ee7c9683 SHA-1: 470d22ee20185afcc9f3631c32e9a4d41d6d243c SHA-256: 6ddd87c0f199416d828e4cc300a951ee5f90b1944067ca4a31c0472a36354869
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://cctraff.ru/pify?keyword=hcr-20+version+3+pdf In PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/05d8e0.pdfIn PDF document text
    • https://tikedamo.weebly.com/uploads/1/3/1/4/131453682/fenubafe_buvelebepujixex.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/gowijipomunolu_lirogub_loletakimup_rozugofekowe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f875b85c3d9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f870d91c65d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5f881cc892360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5f87af88ddc7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f880fda0f813.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8742796.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/vodovofigumeji.pdfIn PDF document text
    • https://site-1040251.mozfiles.com/files/1040251/51996494204.pdfIn PDF document text
    • https://site-1040424.mozfiles.com/files/1040424/haryana_vidhan_sabha_election_2020_results.pdfIn PDF document text
    • https://site-1036750.mozfiles.com/files/1036750/matag.pdfIn PDF document text
    • https://site-1041289.mozfiles.com/files/1041289/89641205737.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/6452398.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/linurigaruxox.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/ruputifavasabegizof.pdfIn PDF document text
    • https://site-1043203.mozfiles.com/files/1043203/fafugigosigurosam.pdfIn PDF document text
    • https://site-1040399.mozfiles.com/files/1040399/66792835677.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_off00007328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7328 5396 bytes
SHA-256: 442b42c93852e3cf5f5b3b4009566772e6af1530b4d1f91e0185842d5b81f932
font_01_sfnt_off00008593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8593 9976 bytes
SHA-256: 00d2dd939328a2e95a855b7e4a5710043c853b0ed250de6417609221af0946a2

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