Malicious PDF — malware analysis report

Static analysis result for SHA-256 daeeb49216f45cdf…

MALICIOUS

PDF

44.9 KB Created: 2020-10-01 10:12:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: feb935b7d73c74eccc123308158f3419 SHA-1: b155dfb81b1be4f708ec81efa5a8118c698814fc SHA-256: daeeb49216f45cdf7ffe774de9cf6d02814942502ecd6c37e2fdb48c1aea2d3d
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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=platform+business+model+canvas+pdf In PDF document text
    • https://site-1039538.mozfiles.com/files/1039538/zevezupuniwepogesapo.pdfIn PDF document text
    • https://site-1037156.mozfiles.com/files/1037156/gonev.pdfIn PDF document text
    • https://site-1038636.mozfiles.com/files/1038636/21351167832.pdfIn PDF document text
    • https://site-1036818.mozfiles.com/files/1036818/gebitekabulu.pdfIn PDF document text
    • http://kobujum.franklininternationalbeautystore.com/uploads/1/3/2/6/132683071/fuzofa.pdfIn PDF document text
    • http://files.cashfromtreasures.net/uploads/1/3/1/3/131379054/doxajegom.pdfIn PDF document text
    • http://xopive.nivekfilms.com/uploads/1/3/1/4/131408183/7b7d0689a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2122/1539/files/definition_of_anemia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5261/3277/files/22145145883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/49207261745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/483ea172-87f9-413e-beae-20a62d994368/zukojibeguzakemiruk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af832da6-9298-426c-955d-48fdbf02cbb4/panonitexined.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7606e4f-6b46-4eca-8836-e24d3938a62f/78575809681.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000618a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 5384 bytes
SHA-256: 1bcb510f25e8f7806eb47c503aa449af944ace320e9cd69e4101d38bab8d435a
font_01_sfnt_off000073ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BA 10916 bytes
SHA-256: 30e98749b45b5df40a1624f1991c10b851ae11cf009f651a445a10fea91ee2b2
font_02_sfnt_off0000990f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x990F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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