Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d845808ee3c71b2…

MALICIOUS

PDF

48.4 KB Created: 2020-10-26 21:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2f2169d36b0711955fa408bb9dce1c18 SHA-1: 1348f9793ee347eb276abe7eaa6a54221e91b3a3 SHA-256: 8d845808ee3c71b28c56faac260b3feca64cb276d40c0c7ce16db16b311fedcc
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is disguised as a resort promotion. This indicates a phishing or redirection attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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/strik?keyword=shoreline+island+resort+promo+code In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/kitebija.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/business_intelligence_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/tamil_news_paper_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/fovikobabarurumizolub.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/cdf_from_joint.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/deconstructivismo_arquitectura.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/ectomorph_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/fibotobef.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/binamumemetifowawanejukoj.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/61094799582.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8706b191-acd5-4d86-9b45-89e0fad6f0f2/94876433346.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40a7adbe-b5bf-4ae1-8479-7a6c19b9260b/10025309898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df869964-b517-49c8-b2ae-1ff11a863b70/zakofazozoboxatoraz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/362387a4-979b-49b0-a47a-c1a6f28fca5d/classical_piano_sheet_music_intermediate.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/pathophysiology_of_acute_gastroenteritis.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/levajabapukasipepu.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/sap_hana_basis_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/40991823927.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/bankers_adda_current_affairs_capsule_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/the_discoverers_boorstin.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_off00007a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A19 5416 bytes
SHA-256: 7d70d4a0ee7a59f7b8df52a465fa25c476ca2634ca75340f431e5e38b0165ef8
font_01_sfnt_off00008c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4D 12176 bytes
SHA-256: 9bb1f3c026a5d0fcaa901c6256084055c38477d2a756fdf987050cb7286aa485

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