Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b5272dab7499a76…

MALICIOUS

PDF

89.4 KB Created: 2021-03-25 02:56:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f0d88f537a6750fa7177d8960ccbb89 SHA-1: 11d47d329adea318429761d3aa41e4133010ecff SHA-256: 8b5272dab7499a76d70ced6f9c16f9988bcf0b57520ec76bb81155ae6e23f47b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest a common pattern of malicious PDFs designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 4

  • 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://dafemum.ru/wix?keyword=bethany+moore+instagram
    • http://ctuxuu.com/483237829188zkmj.pdf
    • https://cdn-cms.f-static.net/uploads/4376600/normal_5fe74fbc98019.pdf
    • https://static.s123-cdn-static.com/uploads/4407664/normal_5fc7fe73670fd.pdf
    • https://cdn.sqhk.co/dotifonuvuwi/iUmQ894/pekepuz.pdf
    • https://cdn.sqhk.co/jikikavadaja/g3Aidhe/92034885420.pdf
    • https://cdn.sqhk.co/navimoxa/ihahejE/26752862515.pdf
    • http://cooldomen.space/977915327659w1mr.pdf
    • http://trysol.xyz/voodoo_hoodoo_review_20208v24g.pdf
    • http://olymp-trade.top/live_life_lives_sentences1rjy6.pdf
    • https://cdn.sqhk.co/nuzitomizaj/hgiheGy/download_o_launcher_2020.pdf
    • http://bikefevogob.iblogger.org/rey_rivera_body_crime_scene_photos.pdf
    • https://cdn.sqhk.co/gazejuruni/Ckbiaee/youtube_music_vs_spotify_sound_quality.pdf
    • https://cdn-cms.f-static.net/uploads/4392664/normal_600a820b5e6d3.pdf
    • https://cdn.sqhk.co/pojizurigos/VhhxX1Y/dilulurur.pdf
    • http://ig-copyrightviolation.com/command_and_conquer_rivals_gameoepji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/cefcce7f-a919-4d71-9206-0faad44f2614/60861656783.pdf
    • http://ziwebizivag.epizy.com/safety_data_sheet_example_us.pdf
    • http://bolilolu.epizy.com/acleis_nglm_24-_5h.pdf
    • https://uploads.strikinglycdn.com/files/6d43a4c8-4cb2-4ca3-b523-818fd9deb27d/borodafonokarotojegula.pdf
    • https://uploads.strikinglycdn.com/files/b119803d-f968-426d-9ab7-2d95d50b8239/huckleberry_finn_character_analysis_in_tom_sawyer.pdf
    • http://verirajoxa.epizy.com/xagozezixefegi.pdf
    • https://uploads.strikinglycdn.com/files/7332bdc9-c7a0-4c5c-b038-867dc0dd5ed7/tujajo.pdf
    • https://uploads.strikinglycdn.com/files/79d80559-e376-4fbc-b859-cf0bb6179b93/america_the_story_of_us_episode_3_worksheet.pdf
    • 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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff94.bin
127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF94 6744 bytes
font_01_sfnt_off0001107b.bin
70c21c6fd723e3fde538a7a15c504729156d093f9d835c2b83cd8f2c54c7d0c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1107B 5004 bytes
font_02_sfnt_off0001214e.bin
272d99026162f15482c5c222b62bf826a79d1d650ad736aca6719874d5732ba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1214E 11696 bytes
font_03_sfnt_off0001479d.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1479D 4324 bytes

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