Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e4650948450760a…

MALICIOUS

PDF

80.4 KB Created: 2021-02-20 15:59:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67874250552c85490772e0fea8c24a5a SHA-1: 100060e413bb6f84bc74f73ad9c3916151604389 SHA-256: 1e4650948450760aa9a14e5c94b300d9ce5623743475c4ff363b952f088a9f8f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result for a 'spy watch manual', likely intended to trick the user into downloading further malicious content. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to lead the user to a malicious download, aligning with spearphishing tactics.

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://seumenha.ru/wix?keyword=spy+watch+8gb+manual
    • http://megatorg.ru/writing_good_thesis_statements_worksheetgr62c.pdf
    • http://front-glass.website/45828459091c1sm9.pdf
    • http://antonio-ita.space/72937708670v2tre.pdf
    • http://repair-foto.ru/how_to_write_a_counter_narrativecu0k5.pdf
    • http://namelesssouth.xyz/alienware_17_r1_service_manualo6jmb.pdf
    • http://keto-s1.com/english_reading_comprehension_test_a2xj7v6.pdf
    • http://golosa-spasibo.ru/zazenukeznffxl.pdf
    • https://cdn.sqhk.co/mudinaxape/gdidUig/pujule.pdf
    • http://jizimawaguda.22web.org/kejuwux.pdf
    • https://cdn.sqhk.co/naxisedomak/5gevWQl/75603081152.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/wuniku/36855198593.pdf
    • https://s3.amazonaws.com/jajoxulabojaso/wubulof.pdf
    • https://s3.amazonaws.com/jusuberu/kuxeguzomivavatutarapaxa.pdf
    • https://s3.amazonaws.com/fajixe/sakilupake.pdf
    • http://wilafeduzavedew.epizy.com/ribaxoxulinukuxamuz.pdf
    • https://s3.amazonaws.com/jafujasiwetid/fema_ics_700a_answers.pdf
    • https://s3.amazonaws.com/fekaduvopigab/28474473112.pdf
    • http://lelirovosas.epizy.com/les_mis_finale_song_lyrics.pdf
    • http://batijobiso.epizy.com/eagleton_ideology.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000fb55.bin
3f78897e7e31acb1ac1e9265a0f0ec5b19e6ee1b8811d14a641fc9ab6fcd8fb0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFB55 23216 bytes
font_00_sfnt_off0000c70a.bin
952b579baf46bf459023b45ab9ff7a60993478ee3851f0e21327e15b2e6613b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC70A 5308 bytes
font_01_sfnt_off0000d900.bin
841c73e0019fc9a499186f4beefbe2900df95fbf8fee4d724a1a2876b648790b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD900 9968 bytes
font_03_sfnt_off0001243f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1243F 4324 bytes

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