Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a54829ec92d667…

MALICIOUS

PDF

84.8 KB Created: 2021-03-28 18:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd4fee5454cf3f59bc3f3eb7e034858c SHA-1: 712870c67a1a792173166c03cc95a4b3e2ad6828 SHA-256: 80a54829ec92d6677673d888a3c007f674c3bf71d5f69b299f747325f3d24bd5
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was flagged by a machine learning classifier and ClamAV as malicious. It contains a lure for downloading an application and critically requests sensitive recovery information, indicating a phishing or credential harvesting attempt. The embedded URL `https://golowaki.ru/wix?keyword=showbox+app+apk+for+firestick` suggests the document is part of a campaign to distribute applications or lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://golowaki.ru/wix?keyword=showbox+app+apk+for+firestick
    • http://consequences.space/merivivuq4ti3.pdf
    • http://reduslimitaly-official.site/kisosevejixutids3aii.pdf
    • https://mevukufidax.weebly.com/uploads/1/3/1/3/131379039/labavu.pdf
    • https://javagakikidubat.weebly.com/uploads/1/3/0/9/130969576/fezejunib.pdf
    • https://static.s123-cdn-static.com/uploads/4384310/normal_6006a0b7c863e.pdf
    • http://mugedly.xyz/kesafapusejademisixonegoore3n.pdf
    • https://cdn-cms.f-static.net/uploads/4389805/normal_600fcba4851aa.pdf
    • https://komibaxes.weebly.com/uploads/1/3/1/6/131606619/2887944.pdf
    • https://cdn-cms.f-static.net/uploads/4451574/normal_5fe8ae60544fd.pdf
    • https://cdn-cms.f-static.net/uploads/4486523/normal_6058c8fef0003.pdf
    • https://cdn-cms.f-static.net/uploads/4381976/normal_5fdbdcef105b7.pdf
    • https://cdn.sqhk.co/tosuwukiwate/Bjj9haW/descargar_b612_beauty_filter_camera_para_android.pdf
    • https://jojiwunu.weebly.com/uploads/1/3/5/3/135387754/489ad.pdf
    • https://cdn-cms.f-static.net/uploads/4413848/normal_602d393b56c77.pdf
    • https://cdn.sqhk.co/pabelewexo/icAlkKZ/how_to_write_business_plan_example.pdf
    • https://cdn-cms.f-static.net/uploads/4491669/normal_5fd793333a4b9.pdf
    • https://cdn-cms.f-static.net/uploads/4485702/normal_605a548d0f311.pdf
    • http://islemleriniz.org/88848823999kp0hm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8ea9f838-1e90-478c-b203-4c9d9c749bd9/aircraft_technician_jobs_california.pdf
    • https://uploads.strikinglycdn.com/files/fe43c2c1-245d-45a1-afba-17a290c8c0dc/aspiracion_de_secreciones_tecnica_abierta_en_pediatria.pdf
    • https://uploads.strikinglycdn.com/files/62a547cf-eeb7-4bb8-bcda-73a44a40e261/zupiwowurejir.pdf
    • https://uploads.strikinglycdn.com/files/3cb54b77-d77e-4fda-9b60-08d96033bb1a/36926799641.pdf
    • https://uploads.strikinglycdn.com/files/2dee52a9-5cb6-48f0-acfd-7becf8059b1e/botitikuju.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f743.bin
3222313baab2206a38e13ac253c1a6acf91bb5bcc47d2c7d103e870814ac070d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF743 5536 bytes
font_01_sfnt_off00010a2b.bin
2a795b7750c512daf9ad1162b2dc585efc7a1cac1716fb4da1ee47b08324928c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2B 11140 bytes
font_02_sfnt_off00013044.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13044 16204 bytes

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