Malicious PDF — malware analysis report

Static analysis result for SHA-256 152671ec8022e908…

MALICIOUS

PDF

65.9 KB Created: 2020-10-28 23:18:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 41cd81571eb7a6da359435c58e19fa36 SHA-1: 91383890e98a5f6bb6c9b04360f0813254a96452 SHA-256: 152671ec8022e908635cf9c5e18045fde0a7b6ce4b598b87dc1c1041550eb9ff
184 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=cargo+ship+el+faro+disaster+in+2015 In PDF document text
    • https://tupuzenetuz.weebly.com/uploads/1/3/4/5/134519332/8911155.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/18f8d4e2b.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/satekusaro-wigipisafex-badar.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/7805117.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/02fdd.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/devamudoke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/29081720289.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18e6053a-fee9-408f-8ec3-214454287c16/jadukadezumutazuvagiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5940/7765/files/storm_area_51_hack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/rixefudakuxaxibigimigev.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/fujupimodedaxujibajodorep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0924/files/24681410936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c4ad2b2-961f-4eb6-9f29-66ef73760cd8/wipem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7922/8837/files/kung_fu_panda_1_streaming_francais.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ac6569b-d466-4450-b5d4-04470cd25f46/cepde_clash_of_clans_hile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29aa263e-b657-4d07-bd65-a5856847b2e7/nofufutusizen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6229/5716/files/varokidozal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9481/1832/files/california_drivers_permit_test_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdb84290-eeca-4c24-8ea2-4d5c6cad41c3/92613058689.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_off0000bc3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC3F 5660 bytes
SHA-256: 4b4b218fd4c6bbf5227e7c11421a248ace1e068bb2e0b7ad141ab7dbc09ddfda
font_01_sfnt_off0000cf82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF82 12180 bytes
SHA-256: b4074443b28d57529a7fa1acd0e52bef168111e6b9f36b6a9ecb9f4b816a08a5

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