Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe35a9ab6c976c6d…

MALICIOUS

PDF

51.0 KB Created: 2020-10-29 02:27:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 9250f1270f2e79b0dbd86a32c80d6403 SHA-1: 772484d584148e7e9ecd44baab371c78d88ac145 SHA-256: fe35a9ab6c976c6dac6c162060e1cc3f543402dcd10cf90f177eacf7edcc89ad
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/strik?keyword=2nd+anniversary+gift'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, indicating an intent to lure the user to a potentially harmful site.

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://gettraff.ru/strik?keyword=2nd+anniversary+gift In PDF document text
    • https://sakuvida.weebly.com/uploads/1/3/0/7/130775714/wuguwas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380068/normal_5f94d8a781e72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410954/normal_5f979de791f61.pdfIn PDF document text
    • https://gupupekulumo.weebly.com/uploads/1/3/4/1/134108922/2535484.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375907/normal_5f89df95b60e9.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/1/0438/4597/6221/files/tedebir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7301/0364/files/8937764688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5810/4986/files/kilokopefaxulo.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/11198988932.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/definition_of_water_conservation.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/72850638776.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/advocare_24_day_challenge_grocery_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67ecdf85-1348-4493-8fcf-5ceb44c0bbfd/4427728429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d69be208-7f66-484c-982f-b15221209101/46999793572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dbaa644-e9db-42a2-9c79-be84be6c9730/sudugividofapabazux.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/32710855438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30d73095-95cd-43af-b4d2-f0d519858f3a/sewubigeximuzipitutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/092cebd5-3a7a-4428-b852-708863b83f73/bibuxarata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9932/2011/files/98588415025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/joderizejajumar.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_off000089aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AA 5244 bytes
SHA-256: a176ba7ee323a49105f3ebc608f5d556c58116aa97fce570515f76ccfe4a21c2
font_01_sfnt_off00009b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B9B 10428 bytes
SHA-256: 4f3203af64d0b9a1a7a0b9351015ba635da403f210aa3beedf7ac8055496bfa4

Open this report in the interactive analyzer, or submit your own file for analysis.