Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ca3fec2e7d84a6…

MALICIOUS

PDF

38.5 KB Created: 2020-10-27 18:21:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8602ecb7c478d3cc3ffa0cf69d3ed9ab SHA-1: f3371bb7f99516b9d8bd58d66795d4fba515d8c9 SHA-256: 52ca3fec2e7d84a678f6fe26aeada9c5cc8484c40dd64f1dcf243ec281ecd534
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which point to a link farm designed to redirect users. One prominent URL, https://ggtraff.ru/strik?keyword=pastel+tres+leches+con+flan, is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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://ggtraff.ru/strik?keyword=pastel+tres+leches+con+flan In PDF document text
    • https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/e6658eae16.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/kavawabukoweduz.pdfIn PDF document text
    • https://vovezakiw.weebly.com/uploads/1/3/4/5/134523709/5861300.pdfIn PDF document text
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/vakameguzurom.pdfIn PDF document text
    • https://xokafewapi.weebly.com/uploads/1/3/4/4/134488510/suletezijolizu.pdfIn PDF document text
    • https://sifizebutu.weebly.com/uploads/1/3/0/8/130814914/kirosugubejakuwek.pdfIn PDF document text
    • https://nupariredarig.weebly.com/uploads/1/3/4/3/134357859/texidaxugevilatib.pdfIn PDF document text
    • https://mizunilido.weebly.com/uploads/1/3/4/3/134352057/c37bca935a6.pdfIn PDF document text
    • https://sakuvida.weebly.com/uploads/1/3/0/7/130775714/jonola-zifoniriwujiki.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/84353154.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2435/0871/files/97750268670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9667/files/followers_for_instagram_apk_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7116/8931/files/76256023099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9474/6288/files/zugujifike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1570/6523/files/pop_up_laundry_hamper_home_depot.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/embryogenesis_stages.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/lofugidinujinumobovaba.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/automobile_engineering_by_kirpal_singh_book_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/secret_life_of_walter_mitty.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/baudrillard_simulacra_simulation.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/cambridge_history_of_ancient_egypt.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/diccionario_de_americanismos_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/bender_gestalt_test_scoring.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_off0000566e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x566E 4968 bytes
SHA-256: 05ea04195ca3d551d3507c1ff7ce4838783361068abf203f52e5993340c19188
font_01_sfnt_off00006742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6742 12028 bytes
SHA-256: e0ec56f0cc4b9f2d1c9b3965d7e763e419c98590136f8b0ecb110c5bcf5c1d67

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