Malicious PDF — malware analysis report

Static analysis result for SHA-256 b54eaef750e5d8c7…

MALICIOUS

PDF

82.5 KB Created: 2021-04-08 19:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92bf2c8ffddc0bbc25facca5ca9abe1b SHA-1: 21a0fb14cb2991e68f1e27169e990de9c5a3b63e SHA-256: b54eaef750e5d8c70bc8af4bfcffa95ecf3f3b2c4e4312635d316fc0d1397066
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The embedded URL likely serves as a lure for users to download malware, masquerading as legitimate software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/strik?utm_term=m-audio+keystation+pro+88+software+download
    • https://static.s123-cdn-static.com/uploads/4446761/normal_600681ce9a470.pdf
    • https://static.s123-cdn-static.com/uploads/4449181/normal_5fc7d6f5081ca.pdf
    • https://cdn-cms.f-static.net/uploads/4453720/normal_5fdb2c16b3bde.pdf
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5fdad439a4e7b.pdf
    • https://cdn.sqhk.co/naziwixolagu/hgjieTj/dudisalaxaxazu.pdf
    • https://cdn-cms.f-static.net/uploads/4417988/normal_606ae60765013.pdf
    • https://cdn-cms.f-static.net/uploads/4413983/normal_605a7b512e2b0.pdf
    • https://cdn-cms.f-static.net/uploads/4475741/normal_6052e66be095a.pdf
    • https://cdn-cms.f-static.net/uploads/4387424/normal_605e1cc4032c9.pdf
    • https://cdn.sqhk.co/naziwixolagu/hhnihyz/word_shuffle_app.pdf
    • https://cdn-cms.f-static.net/uploads/4408582/normal_6060fb998e8ab.pdf
    • https://static.s123-cdn-static.com/uploads/4484804/normal_5ff2fee8c977e.pdf
    • https://cdn-cms.f-static.net/uploads/4394082/normal_6019bd44a8097.pdf
    • https://static.s123-cdn-static.com/uploads/4414849/normal_5fe189502198a.pdf
    • https://cdn-cms.f-static.net/uploads/4374696/normal_606a66e73339a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3bcebba3-f3e9-4c4b-b7e9-2dd007a853c5/1000_verbos_en_ingles_y_espaol.pdf
    • https://uploads.strikinglycdn.com/files/02dc634d-a843-4ee5-9662-bab837dc49e0/whistler_inspection_camera_parts.pdf
    • https://uploads.strikinglycdn.com/files/65c3b2cc-29ee-43f0-a16a-bf1c567117a9/what_is_the_name_of_first_harry_potter_movie.pdf
    • https://uploads.strikinglycdn.com/files/64a84c69-e788-4ee5-9368-ea471002b867/how_to_put_a_tecumseh_carburetor_back_together.pdf
    • https://uploads.strikinglycdn.com/files/7faa587d-1d66-4d0e-aad6-92ff0abcedef/powershot_pro_electric_stapler_staple_size.pdf
    • https://uploads.strikinglycdn.com/files/75efcfca-dc65-425e-aa90-2613695db55d/pikamepifolupabubin.pdf
    • https://uploads.strikinglycdn.com/files/5ca6f02d-fd7c-49a6-a2a7-319467ae9526/delonghi_magnifica_s_manual_espaol.pdf
    • https://www.cancer.gov/coronavirus
    • 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_off000103c6.bin
314cd307ce07b186e0969081eb786ce269424cf7f8e1d2c83bb4b532e193d0d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103C6 5524 bytes
font_01_sfnt_off000116cc.bin
a045efeaf0a1866b5c65693704dd650a6ac2ecbea7672345ca2dc34e18eb4939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116CC 10948 bytes

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