Malicious PDF — malware analysis report

Static analysis result for SHA-256 c96e488c3450dc04…

MALICIOUS

PDF

35.0 KB Created: 2020-11-09 03:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: e70633020a8790e3cbbc9a0210450d4d SHA-1: 275898ce6b774c89577257f3d6608a173be0a17a SHA-256: c96e488c3450dc04dd2fb79b6f3ee8449124060af1695ee49ae844012f5fef48
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?keyword=1953+cadillac+for+sale PDF link annotation
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/741d675311ab99d.pdfIn PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/naweba-dululobu-xidovig-tosogizun.pdfIn PDF document text
    • https://sidunaxegizu.weebly.com/uploads/1/3/0/7/130776644/8689990.pdfIn PDF document text
    • https://palozemoxapido.weebly.com/uploads/1/3/4/3/134366311/pivej.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/vexibiz.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/f25c0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://selogum.files.wordpress.com/2020/11/demufegezi.pdfIn PDF document text
    • https://poroguneg.files.wordpress.com/2020/11/45208298636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57b432ed-32ec-49b9-846c-78e57386642b/ziwovodufekiwuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3b38dcf-c41e-4cc5-a2c6-6a945670eaf9/tivupeviveko.pdfIn PDF document text
    • https://bubapowi.files.wordpress.com/2020/11/etica_y_moral_leonardo_boff.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58f624d8-537a-478a-a0b5-2c2805ef881d/mibezosazet.pdfIn PDF document text
    • https://rolotoba.files.wordpress.com/2020/11/34626921492.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_off000049cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49CD 5416 bytes
SHA-256: 86991b3847a7bbeb7b94cc8885793de94d869c562f6cc1dd1538b94f57a66669
font_01_sfnt_off00005c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C49 10312 bytes
SHA-256: e21f06bc7d0ec489f3451de07e044130a674f12e758f089ae43d0d47172f2e0c

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