Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e128a8ff61ecbcb…

MALICIOUS

PDF

62.3 KB Created: 2020-11-08 13:39:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: efafcdee34d6b419ec188e82b3bf12d6 SHA-1: af986745f6d834710d4bd602fe6cb8cb6ac51cbc SHA-256: 6e128a8ff61ecbcb7bf254d7c85fc6fd99367dd426d06e26e79cabc64ec8c3d7
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://trafffi.ru/aws?keyword=how+to+get+free+gems+in+clash+of+clans+hack PDF link annotation
    • https://zubawolovef.weebly.com/uploads/1/3/4/4/134481331/purero.pdfIn PDF document text
    • https://nepajomawowezuw.weebly.com/uploads/1/3/4/4/134462508/pafuruzu.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/loxesosetifited.pdfIn PDF document text
    • https://rizumamor.weebly.com/uploads/1/3/4/3/134395934/7918861.pdfIn PDF document text
    • https://vasabofilusav.weebly.com/uploads/1/3/4/5/134585229/gufuxivizowoku.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://gefaxov.files.wordpress.com/2020/11/89298278006.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/how_to_change_the_world_book.pdfIn PDF document text
    • https://sosuvoxis.files.wordpress.com/2020/11/isa_arborist_certification_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/acls_protocol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fb1aa2c-9b0a-4390-907f-83664d711959/zutazalugodesus.pdfIn PDF document text
    • https://jebutuvu.files.wordpress.com/2020/11/pestel_analysis_of_aviation_industry_in_uae.pdfIn PDF document text
    • https://zosuriwox.files.wordpress.com/2020/11/figoluzujotinum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f371ed71-7dfa-4848-910a-abecb275d59a/90084433800.pdfIn PDF document text
    • https://pukowaxut.files.wordpress.com/2020/11/mastercam_2017_tutorial_free_dow.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/renal_pyramid_apex.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000afbc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAFBC 26548 bytes
SHA-256: 403a46cb789c99adc57c8e141eae390f7436c72f8c87b2c87ce3adf15047ac70
font_00_sfnt_off00007816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7816 5200 bytes
SHA-256: dc9df2584c1945d71474bfb284f04a5ee05f64175c4dd06189c4d157e597c027
font_01_sfnt_off000089a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A1 11116 bytes
SHA-256: 167a6aabff23249e04e573ff0bca4fb4a84f76055eacaae8bce09ea8b0e35148
font_03_sfnt_off0000dcf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF4 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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