Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd97523659debba…

MALICIOUS

PDF

82.0 KB Created: 2021-06-01 04:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35f989f679754ceee1bedf0ae30ef8ff SHA-1: c0c7d745b49be7c0fc402b7ba4da731a9c5dc909 SHA-256: 9bd97523659debbaa50b446cec5fe8b7cebcd87ba5e39f5f059b8fe7711d07c2
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a suspicious domain, masquerading as an update notification for 'WhatsApp Gold'. This is a common social engineering tactic used in phishing campaigns to trick users into visiting malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://smidgel.ru/pbw?utm_term=how+can+i+update+my+whatsapp+gold
    • https://lurabesuweki.weebly.com/uploads/1/3/4/5/134524451/punebubutinisa.pdf
    • https://static.s123-cdn-static.com/uploads/4407084/normal_5ff30a4dd845a.pdf
    • https://cdn-cms.f-static.net/uploads/4403681/normal_601636c0ceeb3.pdf
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/wakoj.pdf
    • https://cdn-cms.f-static.net/uploads/4458124/normal_5fda7969bb9d7.pdf
    • https://static.s123-cdn-static.com/uploads/4378604/normal_5feba23088e07.pdf
    • https://sarodinejafa.weebly.com/uploads/1/3/4/7/134762654/f68a3e01b1a7ab.pdf
    • https://wimegipovuxu.weebly.com/uploads/1/3/4/3/134373819/5683896.pdf
    • https://static.s123-cdn-static-d.com/uploads/4493282/normal_60b0a4485744e.pdf
    • https://kurokeduzuw.weebly.com/uploads/1/3/4/6/134693898/4275671.pdf
    • https://cdn-cms.f-static.net/uploads/4457302/normal_5fd62c29da25e.pdf
    • https://static.s123-cdn-static.com/uploads/4388276/normal_5feceafcdc763.pdf
    • https://cdn-cms.f-static.net/uploads/4453734/normal_5fdb1bd49e25f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/a3ceff41-55db-44a1-afd7-660506d39898/76128294723.pdf
    • https://uploads.strikinglycdn.com/files/6c2f8fa3-66bc-4f8e-8fc3-cc779573b60e/jlab_jbuds_air_true_wireless_bluetooth_earbuds_with_charging_case.pdf
    • http://dipoziw.pbworks.com/w/file/fetch/144439581/bimitowebovaduxusotu.pdf
    • https://uploads.strikinglycdn.com/files/b9901eed-2f2b-4726-baca-f3eba6f35671/miwixalis.pdf
    • https://uploads.strikinglycdn.com/files/7e6534d6-e467-42cc-bcaf-edfdb1328bc3/james_allen_mccune_bella_thorne.pdf
    • https://uploads.strikinglycdn.com/files/595f0bb1-aec7-4ae8-b3a9-fadc8e2b1c77/ps_i_still_love_you_song_when_they_break_up.pdf
    • http://gazumadu.pbworks.com/f/dulugabavobilesamum.pdf
    • http://ziduzobif.pbworks.com/w/file/fetch/144438630/73451621528.pdf
    • http://rimogeto.pbworks.com/w/file/fetch/144427530/clculo_mental_para_nios_cuarto_primaria.pdf
    • http://foxobekizax.pbworks.com/f/are_raspberry_worms_harmful_to_humans.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000deb9.bin
cef74120723407dd1a10ebc6e8f3d87ff5ec2f7a208d228d00636f087b70f2c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB9 5428 bytes
font_01_sfnt_off0000f119.bin
33c1962199377b1d9a493f1d72fd3c34d64a5946a8c80698cdf32da211e03dc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF119 10848 bytes
font_02_sfnt_off000115d6.bin
ddba3217f58172b9153fa2e17a6755d454371157efde6935f0723efb148e6ff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115D6 16068 bytes
font_03_sfnt_off00012a72.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A72 4324 bytes

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