Malicious PDF — malware analysis report

Static analysis result for SHA-256 75eb97652c3c6751…

MALICIOUS

PDF

64.4 KB Created: 2021-02-15 15:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d92244d8a4cf0a35fcf4195adc5e6acd SHA-1: 22275429ec5d09d25e17a8cc009277c936d1e427 SHA-256: 75eb97652c3c6751a4733ddf12a0dbc1b4455da26fd4bad33c4387024c37827a
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'worksheet answers'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=what%2527s+the+matter+worksheet+answers
    • https://cdn.sqhk.co/nawovoso/hfRxWPe/jellyfish_color_sheet.pdf
    • http://ersoil.fun/goxosufijecflgl.pdf
    • http://domastmsk.space/13354440155630ho.pdf
    • https://cdn.sqhk.co/mijajijem/iTQLk0Y/fish_crush_2020_blast_match_3_adventures.pdf
    • https://cdn.sqhk.co/pepupiribojo/hihWoji/4994395082.pdf
    • https://cdn-cms.f-static.net/uploads/4497081/normal_5fe6863893607.pdf
    • https://cdn.sqhk.co/vuwipabobatu/fFqihv9/megalodon_tooth_for_sale_canada.pdf
    • https://cdn.sqhk.co/nopawuwam/dCsJghX/sugaja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/figidireki/rest_api_design_guidelines.pdf
    • https://s3.amazonaws.com/vuzotisenixava/heathered_cotton_sheet_set.pdf
    • https://s3.amazonaws.com/jazamerijekufol/original_national_anthem_of_pakistan.pdf
    • http://fepujevuzal.rf.gd/sensongs_telugu_ringtones.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfd9.bin
3689a546d47c85769efae5e93fccaaf6e5a46ef7a194c086537726a164af62d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFD9 5096 bytes
font_01_sfnt_off0000d11f.bin
fcbf5351cc673eca9d8b08d9761415f930890e0b4a88944d06e6905285012cd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD11F 10500 bytes

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