Malicious PDF — malware analysis report

Static analysis result for SHA-256 981d22e6638d5133…

MALICIOUS

PDF

81.3 KB Created: 2021-03-11 22:14:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 703392a302986e70b820f796ab5b99b1 SHA-1: 2a47931ef4a177cb89ec408ecac321e70e1f3c55 SHA-256: 981d22e6638d513319c9a549ebdd602a9a3cb9558ca2fe9a5624e019397f5c0a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to financial or legal documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/wix?keyword=trust+beneficiary+receipt+and+release+form
    • http://tizadejaso.getenjoyment.net/voyager_edge_uc_b255.pdf
    • https://cdn.sqhk.co/wojidumezu/heicjcd/electric_bill_check_siwan_bihar.pdf
    • https://static.s123-cdn-static.com/uploads/4446924/normal_5fe3af531bcba.pdf
    • https://cdn.sqhk.co/delojiwuguj/DxjbjX0/stickers_de_youtubers_para_whatsapp_apk_uptodown.pdf
    • https://cdn.sqhk.co/vixawutozama/4ijhfig/minecraft_jurassicraft_2._0_mod_1._7._10.pdf
    • http://ralugugifoxatir.scienceontheweb.net/logical_reasoning_test.pdf
    • https://static.s123-cdn-static.com/uploads/4407733/normal_5fc8778351ac2.pdf
    • http://dalidusiz.mywebcommunity.org/brother_xl2600i_needle_size.pdf
    • https://cdn.sqhk.co/lexelinowe/ibsrij8/gevonarofu.pdf
    • http://lotupojaxuvutix.mygamesonline.org/37785336435.pdf
    • https://cdn-cms.f-static.net/uploads/4470222/normal_602988b7e99b1.pdf
    • http://fabimepela.22web.org/73833925657.pdf
    • https://cdn.sqhk.co/wezikinupig/PicggEW/stomach_pain_and_nausea_ibs.pdf
    • https://static.s123-cdn-static.com/uploads/4427293/normal_6001805475d95.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://vopezaxaf.epizy.com/69176956012.pdf
    • https://uploads.strikinglycdn.com/files/a0cdb9d9-62be-4811-9346-186671caaef7/firex_smoke_detector_chirps_twice.pdf
    • https://uploads.strikinglycdn.com/files/46abd87d-9782-4c93-8e61-2986138bc27a/dream_interpretation_red_apples.pdf
    • http://gisipusizen.rf.gd/23893250939.pdf
    • http://pujuban.rf.gd/biguribomijutixosavupa.pdf
    • http://pabewuvuxaf.onlinewebshop.net/xoranupudezodelupaliliwas.pdf
    • http://mevajem.rf.gd/motuj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f144.bin
86e945e7de7347eef1a2395a29c3447918d10620f8d6885ad725815c79772c58		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF144 5376 bytes
font_01_sfnt_off00010376.bin
24e2eb899c3333435f7df753df9fe04a17c1881b1a27232d501531d0b698fc26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10376 10616 bytes
font_02_sfnt_off000127cd.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127CD 4324 bytes

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