Malicious PDF — malware analysis report

Static analysis result for SHA-256 63595b75ec2a65c5…

MALICIOUS

PDF

79.1 KB Created: 2021-03-21 01:22:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: cc2b358a36f5b84f09013d952381c792 SHA-1: 7aec9cf674bf196effb26f25998b36de560b6ec5 SHA-256: 63595b75ec2a65c52712b4ced5edd3ae13feb8b25f413b46e4033aae26b40088
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a resource that is likely a malicious payload, disguised as a marketing guide. The PDF structure itself contains obfuscated content, suggesting an attempt to hide malicious functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/wix?keyword=ultimate+guide+to+local+business+marketing+pdf PDF link annotation
    • https://cdn.sqhk.co/datolabevev/G1hfhes/xupuvowezanojurikuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_601d2930364cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_5feaf4aba37d5.pdfIn PDF document text
    • https://cdn.sqhk.co/kupodakojav/ZmKMdqV/fondant_icing_cake_decorating_ideas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tosodesuvivat.epizy.com/free_high_school_resume_template.pdfIn PDF document text
    • http://jubadoloje.epizy.com/intersection_design_guide_fdot.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/18413885499.pdfIn PDF document text
    • http://nawuxek.rf.gd/accident_report_book_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/kakazotizap.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/7102221410.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/nuwesanajebuje.pdfIn PDF document text
    • http://tavokitewigi.rf.gd/mogifawajaxip.pdfIn PDF document text
    • http://nonulalomijowo.epizy.com/entropia_universe_leveling_guide.pdfIn PDF document text
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_b6b7bf1157a54c899535f0bf4d510a15.pdf?index=trueIn PDF document text
    • https://41be308f-8a64-4dec-8b30-4937605be974.filesusr.com/ugd/f042fe_9727a9b3b8414b4b90548097ad331f87.pdf?index=trueIn PDF document text
    • http://sivinufedumoja.rf.gd/rethinking_early_childhood_education.pdfIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_f3e18adc4ab3437ca9a8e95c7ccf84c0.pdf?index=trueIn PDF document text
    • http://xabasib.rf.gd/docker_run_android_studio.pdfIn PDF document text
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_2afab9b140d94b37a2614d2b104570e7.pdf?index=trueIn PDF document text
    • http://sirilamezowi.epizy.com/car_driving_game_free_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/boxevonaliledagusejedu.pdfIn PDF document text
    • http://gorenamuzenek.rf.gd/benny_andersson_chess.pdfIn PDF document text
    • http://vezufokat.rf.gd/case_files_surgery_4th_edition.pdfIn PDF document text
    • https://89d9876f-4e47-4433-ab5b-8da47ae3ae5c.filesusr.com/ugd/37c326_53fb80ae636e48caa707e3a938404ec1.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF495 5672 bytes
SHA-256: 5e0199fb2f482d0bbd845c683edff1db44d47fbdb2b91fe4ecdefa9da73f8da1
font_01_sfnt_off000107c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C7 10848 bytes
SHA-256: f9200a130b59e8e74c2db9b8d19f19c1f9a90eee82255952a757213be2a89225

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