Malicious PDF — malware analysis report

Static analysis result for SHA-256 0afd271eaa3facbe…

MALICIOUS

PDF

47.2 KB Created: 2020-10-29 09:40:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bdadd19376a200949b636a5b46642fc SHA-1: 5de5a3b6db0a18c829cf799ebaf350ffca413fe7 SHA-256: 0afd271eaa3facbe8037526ec7307ad67be214907a59ea169bc12b87c5d866ab
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a direct link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL, 'https://cctraff.ru/strik?keyword=legalize+marijuana+speech', is the primary indicator of malicious intent. While no scripts were extracted, the ML classifier strongly flagged this PDF as malicious, suggesting it's designed to exploit users through the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://cctraff.ru/strik?keyword=legalize+marijuana+speech
    • https://cdn-cms.f-static.net/uploads/4390074/normal_5f9a469825738.pdf
    • https://cdn-cms.f-static.net/uploads/4403687/normal_5f921341a4bb1.pdf
    • https://cdn-cms.f-static.net/uploads/4381289/normal_5f98857d09829.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f529f5e8-2648-4c2b-bd8c-57101010effd/goxopefuririgowaxob.pdf
    • https://uploads.strikinglycdn.com/files/9e0d1c79-30fd-4b70-9a0e-847645432fba/neoliberalismo_breve_historia_del_infierno.pdf
    • https://s3.amazonaws.com/jamokaroxoj/22708790202.pdf
    • https://s3.amazonaws.com/wonoti/95957544531.pdf
    • https://s3.amazonaws.com/jifesu/challenging_algebra_word_problems.pdf
    • https://uploads.strikinglycdn.com/files/119250a9-ad9c-4c01-909a-fd4c629a9a33/fezuvukago.pdf
    • https://s3.amazonaws.com/pazifetanegapu/ravusaguzutubemowaso.pdf
    • https://s3.amazonaws.com/wanasuvedigo/6298204576.pdf
    • https://s3.amazonaws.com/dotivaf/guia_examen_toefl.pdf
    • https://s3.amazonaws.com/piwupevivotixi/visebosijelorokumuvoz.pdf
    • https://s3.amazonaws.com/xefejevife/angelika_neuwirth.pdf
    • https://s3.amazonaws.com/jupevuxirapi/86036233415.pdf
    • https://s3.amazonaws.com/sepawi/xonuvuvimamitikeputevedu.pdf
    • https://s3.amazonaws.com/tumasun/21518810930.pdf
    • https://s3.amazonaws.com/xilasisefi/rolegavapofamunaxosulid.pdf
    • https://uploads.strikinglycdn.com/files/c399706c-e045-4c07-b588-5e9a689ffd5f/print_lined_paper_landscape.pdf
    • https://uploads.strikinglycdn.com/files/2257f4ca-d848-47ec-8219-a9611a733d20/piezoelectric_accelerometer_datasheet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ca4.bin
2f9a9bf7476a18657d90593fe01a51b79e6b9e8bc9447a696dba9868202d7239		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA4 5108 bytes
font_01_sfnt_off00007dd6.bin
44378cf28fe60cc3e43a9e8d6cff320310dd1a243dfde544a8c6b3432a461ea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD6 10416 bytes
font_02_sfnt_off0000a11f.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA11F 4324 bytes

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