Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97bb7d152b672c1…

MALICIOUS

PDF

41.5 KB Created: 2020-11-05 20:16:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 8cc8df66b01620be14866963a90bb91e SHA-1: e2e0f886c275999d5911477d39ecd65cb7db5da4 SHA-256: e97bb7d152b672c13ccd47b5fae80c7d491df6bd6271bfe398f42ac2279916c0
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://trafffe.ru/aws?keyword=cafe+luciano+chicago+il PDF link annotation
    • https://fopimakalegej.weebly.com/uploads/1/3/0/7/130738542/9243153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_5f9d083a11e40.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/pesekavitub-zawixufegiba.pdfIn PDF document text
    • https://pamuvomamutafa.weebly.com/uploads/1/3/4/3/134305197/tuzite.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/784014.pdfIn PDF document text
    • https://bazuditok.weebly.com/uploads/1/3/4/5/134590154/vaxugipipixujo_lapixumaf.pdfIn PDF document text
    • https://denasigetul.weebly.com/uploads/1/3/4/3/134332190/tidavu.pdfIn PDF document text
    • https://nadazilagola.weebly.com/uploads/1/3/4/3/134314388/be353a71a.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8276696.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://uploads.strikinglycdn.com/files/d361314c-41e4-4a9a-b77a-50ce83ae6f97/kejuvuzadasadijoxeduf.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/48507092094.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_off0000553d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x553D 4696 bytes
SHA-256: 89751c1e6e307e01a9a815a10a58f8eb169f8e8c6a55f6140da28cbae615462a
font_01_sfnt_off00006530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6530 10800 bytes
SHA-256: c953e0e14197367a9a542b3d4c04ecc9e99d2e47618ea060bce3276b54ffc04e
font_02_sfnt_off000089c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C3 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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