Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec2f9d2f940a8e75…

MALICIOUS

PDF

81.6 KB Created: 2021-04-02 21:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89d3ad40d2868b13fca5e4aa65c87eea SHA-1: 24bb79ec6a1ea3fa2e8966a4ff922ebb5b6f04ef SHA-256: ec2f9d2f940a8e75ce3121fd75a5941e16e81aeb5c5f9cf87f5b26551fbbb461
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to 'https://xezojetit.ru/wix?keyword=ready+by+21', which is likely used to deliver a secondary payload or redirect to a phishing site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs and high-risk heuristics points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=ready+by+21
    • https://cdn-cms.f-static.net/uploads/4480579/normal_5fe6ba75cdc68.pdf
    • http://misamal.22web.org/internet_of_things_architecture_and_design_principles.pdf
    • https://cdn.sqhk.co/vizelupavew/mghXdia/leadership_and_management_reference_books.pdf
    • https://cdn-cms.f-static.net/uploads/4481422/normal_600c82256e6c4.pdf
    • http://allieshouseofhope.com/37922644189e769l.pdf
    • https://cdn.sqhk.co/begokaxawip/hbghmVm/off_road_racing_3d_apk_download.pdf
    • http://vir-tus.com/bepitak606hs.pdf
    • https://cdn.sqhk.co/ferorigife/iiamCgj/running_cheetah_animated_gif.pdf
    • https://cdn.sqhk.co/kuzaxepigi/6jdjgqo/download_train_track.pdf
    • http://abistrans.ru/do_they_still_make_i_spy_booksma5g1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gigezevozaf.epizy.com/48274844958.pdf
    • https://s3.amazonaws.com/wexukufedepim/summary_of_the_two_brothers_egyptian_story.pdf
    • https://5c90cfa9-af55-48e2-9430-1f3580382729.filesusr.com/ugd/e2b09b_87f4eda487ba46c4a3d47b243c322334.pdf?index=true
    • http://givaneja.rf.gd/list_of_cabinet_ministers_of_andhra_pradesh_2020.pdf
    • https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_d5fcd2bf41f94a0b8596a9cc7371f993.pdf?index=true
    • https://s3.amazonaws.com/getizar/79343180695.pdf
    • https://63209029-b609-4f89-80e5-af59b408cdb4.filesusr.com/ugd/0713e6_c58dd5cd7f914e6d891790bafba4dd62.pdf?index=true
    • https://c69a8150-bb1e-4c46-878b-fc1622391bd7.filesusr.com/ugd/cf91d6_d38869ab3da3457c982b374027c2f5c2.pdf?index=true
    • http://vogokibogewete.epizy.com/why_does_my_hair_dryer_keep_turning_off.pdf
    • https://ed7c5604-ec0f-4ae6-9d22-6d534b57d154.filesusr.com/ugd/1d5a3f_73d7715e8e1c46fe972c1ba09cc6acf3.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb8b.bin
0f4a3a8ac58437bd6c310aecb4ab043c82cdc247af21e3ff3afa50ce70d0c1df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8B 4948 bytes
font_01_sfnt_off0000fc84.bin
6da083e02e6449e3caa08947b549464f3d8c1c352bd38be39f9a2097e11ac3a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC84 11476 bytes
font_02_sfnt_off00012329.bin
e3dbd1af6caa92e4dedb0d688d6fe1435bb6b85b627bc2c12238a9cca3e9b79b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12329 16104 bytes

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