Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d722c9cf7cb5e9…

MALICIOUS

PDF

77.6 KB Created: 2021-04-06 09:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4708a2560d835ee9f5624f63290fe399 SHA-1: 29df3326ff95841676085b904599db834094118f SHA-256: 25d722c9cf7cb5e9645e71c36951097126155ca0e66184f032e3683c97d1b605
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a Stanley jump starter manual, likely as a lure for phishing. 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 redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://golowaki.ru/wix?keyword=stanley+350+amp+jump+starter+manual
    • https://cdn.sqhk.co/bilanogakiw/scihibu/miniature_painting_progress.pdf
    • http://repuvotase.iblogger.org/rosawugesuligowu.pdf
    • https://cdn.sqhk.co/pefisemise/ijicicd/v_screen_recorder_for_pc_download.pdf
    • http://gusonesi.iblogger.org/region_7_central_visayas.pdf
    • https://cdn.sqhk.co/dasofuduveje/Djajbjg/dabafegoku.pdf
    • http://davupopebuwiser.sportsontheweb.net/trimble_business_center_hce_4.10_download.pdf
    • http://silujokiz.mypressonline.com/xuragugive.pdf
    • https://cdn.sqhk.co/vizoxaxijojo/cbgjhhn/woodwork_tools_for_sale_gauteng.pdf
    • https://cdn.sqhk.co/nerutamar/igqheZm/77344327808.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://486bfeb6-87d8-40a3-812f-3449909c9139.filesusr.com/ugd/81b904_d878a182b0a44b28b45ca6960295bc73.pdf?index=true
    • http://nemevefer.rf.gd/edm_acapella_free.pdf
    • http://maxezexisog.rf.gd/kedeguwabadolijovisave.pdf
    • http://nejesezape.myartsonline.com/sowetuwulopusobeli.pdf
    • https://uploads.strikinglycdn.com/files/d424fe6b-c01e-4f41-b9bc-dc5ddee3b688/48271613128.pdf
    • https://uploads.strikinglycdn.com/files/313f251d-cce3-493c-b050-b9a8eb193348/paulo_coelho_quotes_11_minutes.pdf
    • https://uploads.strikinglycdn.com/files/e281ffdb-4541-440e-8615-6d96227910ba/xudofonabaniguzorabid.pdf
    • https://14319df0-7947-4f0d-bbb3-eaa17d5eb23e.filesusr.com/ugd/c45f38_d58453dbad414b79a7f6a005c4d32199.pdf?index=true
    • http://visunes.myartsonline.com/14295776905.pdf
    • https://uploads.strikinglycdn.com/files/38aac2bf-ce1b-47d3-9d05-433c12876183/91775404175.pdf
    • https://e0eedba4-cf99-4c42-97f5-d3f9ae5832dd.filesusr.com/ugd/e36ea7_2f4d4e3518d0474194c9929706306ca4.pdf?index=true
    • https://cf268418-7549-4780-9cff-e39e61b5276c.filesusr.com/ugd/0b1cf2_ab2a5c75e23c418fba9428988b4828ef.pdf?index=true
    • http://zofutigo.epizy.com/arere_ekkada_female_song_naa_songs.pdf
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_788db21e5b34494d9fe54aba2660a831.pdf?index=true
    • http://mezexefobotero.epizy.com/multi_member_llc_operating_agreement_template_pennsylvania.pdf
    • https://uploads.strikinglycdn.com/files/8de911ef-a57d-43ba-bbd9-839c48118cb0/what_lenses_work_with_nikon_z50.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_off0000ee9c.bin
3383082e46719e928cd061b58063a9890c8c0465de1e4ae7fc84d58c38595508		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9C 5676 bytes
font_01_sfnt_off000101de.bin
fc9d24a4b4c23af626cbc16360bedefc1478a917d787ee309634d923a8465fea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101DE 11532 bytes

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