Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd6519d82db3925…

MALICIOUS

PDF

78.9 KB Created: 2021-03-09 04:31:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc0aa1a494ec516dd050d7415ee59f36 SHA-1: ebb787658ed00194eeb99f44e0fe5aed062a5121 SHA-256: 3dd6519d82db39256db809e0cbaaba1f6b3d43f00b678bbc6997d286ee81053a
104 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier, indicating a phishing or trojan payload. The PDF contains an external URI pointing to 'lozipotod.ru', which is likely part of the attack chain. Although no scripts were explicitly extracted, the PDF structure and the presence of external links suggest an attempt to trick the user into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/award?keyword=merge+pdf+with+adobe+reader+xi
    • http://kaloveximi.iblogger.org/sodastream_source_directions.pdf
    • http://zonizubiro.getenjoyment.net/long_term_survival_food_list.pdf
    • https://genexezo.weebly.com/uploads/1/3/4/6/134616565/wadulet.pdf
    • http://lirituniwati.22web.org/66576487528.pdf
    • https://norogogobizifuk.weebly.com/uploads/1/3/2/8/132816096/manisipip.pdf
    • https://lepebixetuvenal.weebly.com/uploads/1/3/4/6/134634058/981fbaef1ab1162.pdf
    • https://piwutevuxave.weebly.com/uploads/1/3/4/8/134891910/vomemuxogijibe-gesudopune.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lodonevubepivor.epizy.com/kubinetasugoforow.pdf
    • http://buvizukiwixo.rf.gd/unemployment_insurance_phone_reporting.pdf
    • https://uploads.strikinglycdn.com/files/cbdffadd-a886-44ee-9cfe-658d3d4c3001/61911439660.pdf
    • http://fazobelo.onlinewebshop.net/quadratic_equation_solver_online.pdf
    • http://kimawawasero.onlinewebshop.net/78738717092.pdf
    • http://duwimufowewis.epizy.com/the_good_the_bad_and_the_ugly_sheet_music_orchestra.pdf
    • https://uploads.strikinglycdn.com/files/7af5e045-88bf-43c4-98d7-720cead37a86/how_much_is_epson_projector.pdf
    • http://fijijap.rf.gd/national_geographic_logo_vector.pdf
    • https://uploads.strikinglycdn.com/files/3f7a9c26-f029-463c-9fdd-8cf2e93ffb1d/sig_sauer_p226_legion_magazine.pdf
    • http://wizigipixe.atwebpages.com/excel_vba_table_functions.pdf
    • http://xafegewoweli.epizy.com/ditejizob.pdf
    • http://zunebodiz.epizy.com/bajopifevipafoso.pdf
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_1a977634ed424d83bae766e74e5d4df9.pdf?index=true
    • https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_7a5c25ee5a3d42249f53ded8c8e94722.pdf?index=true
    • https://uploads.strikinglycdn.com/files/42ec178f-7423-4624-85ca-aa025e712537/sonij.pdf
    • http://wubavon.epizy.com/bapiraj.pdf
    • https://uploads.strikinglycdn.com/files/daffd59b-95c3-4ee8-ba4d-a9a50cfe3194/20373137738.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_off0000f6ea.bin
bcbcf10918d99248bee132bc52a00f812cf9796fef5578ae6e75c58cb82e6f61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EA 5400 bytes
font_01_sfnt_off00010965.bin
8fb9cbcdfb658d803743e800907c5ed351a97df6e87aead9072526da05c7317c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10965 10648 bytes

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