Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9012ad231b4e8d…

MALICIOUS

PDF

76.3 KB Created: 2021-03-26 02:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab53f253854b2f46edebecbaf1f1b6b6 SHA-1: 1b36378d64969645b4004494bfcacc9bf3fd85e4 SHA-256: ee9012ad231b4e8d90f25eb19f3ecbfeccc7d5743c0818b862830211dc2992b6
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm with numerous external URLs. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was generated programmatically. The presence of many external links, including suspicious domains like 'nipisod.ru' and 'mypressonline.com', indicates a likely attempt to redirect users to malicious sites for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/strik?utm_term=moultrie+a5+gen+2+troubleshooting
    • http://baliferifopiz.mypressonline.com/carlo_petrini_libri.pdf
    • https://cdn.sqhk.co/rapowipijes/zN9jdTJ/netflix_login_account_information.pdf
    • http://wozupabalaviv.medianewsonline.com/zujudepativ.pdf
    • https://cdn.sqhk.co/tamenotu/XphcGjk/jawirefiriko.pdf
    • https://cdn.sqhk.co/letijefa/jilW3iM/bucket_list_2007_movie_cast.pdf
    • https://tamukatiraf.weebly.com/uploads/1/3/4/7/134766395/rojadam.pdf
    • https://molobaguzali.weebly.com/uploads/1/3/0/7/130739923/456403.pdf
    • https://cdn.sqhk.co/bofagenined/fhcBggG/printable_handprint_template.pdf
    • https://cdn.sqhk.co/gegefemorosu/hhh2f7d/second_hand_clothes_shop_near_me.pdf
    • https://noripuluse.weebly.com/uploads/1/3/5/9/135957130/lakekofazewavitat.pdf
    • http://fuwijumazawad.mywebcommunity.org/calgary_lrt_map.pdf
    • https://duzopuxezofuj.weebly.com/uploads/1/3/1/3/131382696/61ec3913c1.pdf
    • http://sisogelodaze.medianewsonline.com/medical_dictionary_english_spanish.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://901c4554-6fda-40bf-8344-1f1538f5dc06.filesusr.com/ugd/a76634_da32ed2c48b44c44881a0d8af91743be.pdf?index=true
    • https://72858ab8-d36f-4bc2-b208-e5ec56e76d01.filesusr.com/ugd/3a4e0e_13c73320ada341f6b0344d4e6d1579c1.pdf?index=true
    • https://8dea6f00-b35b-4e5f-9f5e-01d9eb130a9a.filesusr.com/ugd/6a8da5_2f41604ac4754f2782aafcefeb47034c.pdf?index=true
    • https://c0b8f06b-4e98-4d3d-89ef-2f08caba629a.filesusr.com/ugd/0c8cc8_7572c8c6cbd94f1fb19651936643a967.pdf?index=true
    • http://kepawomokatuke.myartsonline.com/pride_and_prejudice_full_movie_2005_putlockers.pdf
    • https://3b044092-e341-4c69-a8e2-52b14fc1865f.filesusr.com/ugd/370021_ac5725a504144affae1a58e21ee8c052.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9d2.bin
7c8d33d5d57f77c6d17bc30c4f7f28ce0494945925536424706527319dd7be47		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D2 5348 bytes
font_01_sfnt_off0000fc0b.bin
38a306e647ade3464a48b04bee9011b8ebc2e593785dfad905ee622073923dab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0B 12572 bytes

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