Malicious PDF — malware analysis report

Static analysis result for SHA-256 00fadff50f3faf06…

MALICIOUS

PDF

34.9 KB Created: 2020-10-23 17:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0a9377195ad3dcedb4b28281d6b84b0d SHA-1: 792abbf2567e99215e29e934026de232bc6c2866 SHA-256: 00fadff50f3faf06df97f017005ee950bf6721f3bba818c18eba96cebed01a37
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it redirects to a known malicious URL. The ML classifier also strongly flagged this PDF as malicious. The embedded URL `https://ggtraff.ru/aws?keyword=proyecto+de+tesis+pdf+peru` is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

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://ggtraff.ru/aws?keyword=proyecto+de+tesis+pdf+peru In PDF document text
    • https://gibitiwatu.weebly.com/uploads/1/3/0/7/130776060/merukuge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392195/normal_5f90b7c8a3633.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f879ca439200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_5f927085ce54d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f90c6ea1b6b2.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/zaluzikogogi.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/lajav_ramipomubevit.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/wovexofek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cda38fc0-b11e-471c-bdee-5e30a6d624e7/identificacion_de_metales_ala_flama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/340d2d08-0d55-443d-a93e-58a50a17b6ea/37063743151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd41f20b-161d-4799-ba23-1ead3c66bd35/26631277819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/cbt_worksheets_for_anxiety_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4305/9862/files/fiwiputal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e51436c4-b2f9-448c-848c-34f7861ecff3/74287997960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e4b1a9-6bf8-430b-a0a8-447084201581/kewedefozoxuw.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_off00004ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB4 5008 bytes
SHA-256: d00cad31b287c97c29cd4e172e58380de7f9cb21f706fa8842cf9c281c297a19
font_01_sfnt_off00005bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD9 10352 bytes
SHA-256: fccc855254e7220ea7e473120d3bc2b85f619c5764733c4ff8e52d2de6bc7131

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