Malicious PDF — malware analysis report

Static analysis result for SHA-256 65fbd756b0ce198c…

MALICIOUS

PDF

82.7 KB Created: 2021-03-31 05:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 05d657e9799a842a4b56ac564d187c8f SHA-1: 425f1e59058dd7aa6b9bcbce86bde454d97b381e SHA-256: 65fbd756b0ce198cd54ee5e46475af7dd0eacc5731a89a5fa6ea58448437e848
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, indicating a phishing or trojan payload. It contains an embedded URL that, while appearing benign in some contexts, is part of a larger set of URLs, one of which is marked as unknown. The document body is heavily obfuscated, but the presence of PDF-specific heuristics and embedded URLs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

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 http://lnstagramsupportingcenter.com/hoja_isometrica_para_dibujol5g8r.pdf In PDF document text
    • http://shoop-fl.ru/vsphere_client_5._5_freeikb38.pdfIn PDF document text
    • http://passive-income.ru/chemistry_unit_4_test_b_answersjcuih.pdfIn PDF document text
    • https://cdn.sqhk.co/sukexesi/RPA7agO/mi_telcel_english.pdfIn PDF document text
    • https://cdn.sqhk.co/fupokonabat/ZicMjh1/telemedicine_companies_in_georgia.pdfIn PDF document text
    • http://static-get.top/85867449292a9qzx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/dRGGkpkNhSI/wb?keyword=how%20much%20sodium%20does%20a%20taco%20bell%20burrito%20havePDF link annotation
    • https://uploads.strikinglycdn.com/files/1a4835b5-759d-4ef9-87d0-2e1d4454159c/69773673319.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/can_you_tow_with_a_rav4.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/rig_veda_sandhyavandanam_kannada.pdfIn PDF document text
    • http://dugafoto.epizy.com/sakedolexuzopokubufigibi.pdfIn PDF document text
    • https://101c3d73-5e22-4da1-a203-a3a2a794ce88.filesusr.com/ugd/69a512_b86b6ee8b0bc4596b5ae772c56af9ab6.pdf?index=trueIn PDF document text
    • https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_d197ebc93f294359aebe3429893c4ab6.pdf?index=trueIn PDF document text
    • https://5bf49506-6ef1-42f8-8f90-7e3689255fd3.filesusr.com/ugd/8fe1bf_144ad5128bf7475b8a0f6f3567994ee9.pdf?index=trueIn PDF document text
    • http://beroseji.epizy.com/mariam_khan_reporting_live_serial.pdfIn PDF document text
    • https://645c32c3-7e99-4959-b93b-7980205539d7.filesusr.com/ugd/30a31c_c67118ebee2042df909525f9e8b26c12.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/87010030617.pdfIn PDF document text
    • http://mebufid.rf.gd/52868426549.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/pathala_bhairavi_movie_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d886d4bc-2582-4a79-b590-c0c1a2596d7c/19822809078.pdfIn PDF document text
    • http://gowatane.rf.gd/40001974794.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/kopexubedisob.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f72b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72B 5208 bytes
SHA-256: 9a33e58f9410615f613ae86f475d65d9d4601b01e4b6a8e704542a7262e65adc
font_01_sfnt_off000108ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108ED 11276 bytes
SHA-256: 0f918c7862599877c0c4748a3e7cace7fd54d7d64cb8a2090327373bbce7c499
font_02_sfnt_off00012efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EFA 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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