Malicious PDF — malware analysis report

Static analysis result for SHA-256 338161cd024d0e38…

MALICIOUS

PDF

48.1 KB Created: 2020-11-07 21:51:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: f1f6b98e68b9f2a4e9eccf08e6c5dc9b SHA-1: e61ddb16f07c6b2cb7c34095bd8dcbc478de3c29 SHA-256: 338161cd024d0e3855c4efc02e349984f8f343f8fca4dfea299c3fe53c095c33
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/aws?keyword=my+hero+academia+episode+54+english+dub PDF link annotation
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/wilaburunitoxe_jezuvu_bigikonagi.pdfIn PDF document text
    • https://fenorave.weebly.com/uploads/1/3/4/6/134639489/redefi.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/lagezuletibiju.pdfIn PDF document text
    • https://renupipa.weebly.com/uploads/1/3/4/3/134383378/af10f.pdfIn PDF document text
    • https://gozaxuvo.weebly.com/uploads/1/3/4/6/134612917/2128339.pdfIn PDF document text
    • https://bupaduzisi.weebly.com/uploads/1/3/4/4/134475958/8ab76ab.pdfIn PDF document text
    • https://sigogaxeba.weebly.com/uploads/1/3/4/6/134620414/xozafi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://jogivudewel.files.wordpress.com/2020/11/2129586400.pdfIn PDF document text
    • https://fewimeni.files.wordpress.com/2020/11/nugam.pdfIn PDF document text
    • https://fororonur.files.wordpress.com/2020/11/mujinofa.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/83590505212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfae2b34-e08d-45df-9d53-93063ba84866/rootsmagic_7_manual.pdfIn PDF document text
    • https://vulopadur.files.wordpress.com/2020/11/60445860904.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_off0000679f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679F 4888 bytes
SHA-256: 442889f754dc49640ae551f61f1edd30c69e00ca405851e9badd63f502c2a16a
font_01_sfnt_off000078c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C9 5948 bytes
SHA-256: 3b3fcc62d0c6de5535d0abe46e6ba1159005a4ca698815653ef79d5c235aedf7
font_02_sfnt_off00008cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF1 11144 bytes
SHA-256: 89dd946d662462898353de4522d6cbdae22380f2e3ca61e181a7497acf2bb1c3

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