Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d4ffa984326101…

MALICIOUS

PDF

75.4 KB Created: 2020-10-27 21:20:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 14d516eeb8e9b3fccfafbae3b6e6334e SHA-1: 19ad7111638ef3ae6931d9cb308746515d4b4b23 SHA-256: e2d4ffa984326101d6c37efbbac5cf6e7c17861a38ff364fb01e322b143b0b05
154 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'Manual casio ga 110 español' and embeds a link to a known malicious redirector. The ML classifier strongly indicates maliciousness, and the PDF structure suggests it's designed to host a link farm for SEO manipulation or to redirect users to malicious sites. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://gettraff.ru/strik?keyword=manual+casio+ga+110+espa%25C3%25B1ol In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f8ee39880a71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391620/normal_5f9008efe0af8.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://cdn.shopify.com/s/files/1/0482/9357/6862/files/pokemon_location_guide_pokemon_legends.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1646/5817/files/mission_impossible_game_download_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/process_validation_guideline_emea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3032/files/38534742349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9689/4357/files/rofuvakuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0078/1759/files/lotosiwexelovov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1185/6322/files/sewopob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3744/8609/files/cal_poly_pomona_directory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6322/5767/files/5657496784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8990/7878/files/particle_diagrams_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/7436/8699/files/gummy_bear_reaction_gif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7277/4849/files/delighting_in_god_tozer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/dizajesekugiwozowakejek.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/how_to_use_breadboard_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/come_alive_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/zoxinodiletuti.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/forixidepegejupinufaz.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_off0000ce6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6B 5216 bytes
SHA-256: 2435bda6b54d7e94e3ea5985fe87464a60fde4e3223de9e6405ed1d71ecd1be4
font_01_sfnt_off0000dff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF2 15820 bytes
SHA-256: 41c8ca639607eb8b2fc80530badba6c3ebe2be52b6afcf10de2c37cf8d777720
font_02_sfnt_off00011060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11060 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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