Malicious PDF — malware analysis report

Static analysis result for SHA-256 605abf367b4371fc…

MALICIOUS

PDF

93.0 KB Created: 2021-03-16 06:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 4558a68cf24626fb3e2c8a8c37dac9a4 SHA-1: 28c2ef24257addf0120082a0f257f1f10861f505 SHA-256: 605abf367b4371fc7416595611fdcde3eb0a66bb9a5af0490b79fd68adcbf39d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely intended to trick the user into downloading further malware or visiting a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'Bohr s model of hydrogen atom pdf', suggesting a lure to disguise the malicious nature of the link.

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://pelibifir.ru/award?keyword=bohr+s+model+of+hydrogen+atom+pdf PDF link annotation
    • http://nanebaxexob.getenjoyment.net/vemobosenovajefenejowat.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/bhagfLN/dog_torn_meniscus_brace.pdfIn PDF document text
    • http://pexulisinipev.sportsontheweb.net/15765936874.pdfIn PDF document text
    • https://cdn.sqhk.co/wozepefiga/gnZhfgg/xoluxobopufe.pdfIn PDF document text
    • http://jafinipu.scienceontheweb.net/entrepreneurship_management.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/heGkskF/house_designer_fix_flip_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/Gnhfibk/50203124717.pdfIn PDF document text
    • http://lezirumari.sportsontheweb.net/kpmg_aptitude_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/devurekon/fG6LjfN/50332990945.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/jane_eyre_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/jajcKgg/school_driving_3d_game_play.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/vcds_18._9_china.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/67004621834.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/wukalosutaredanizi.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/34798631402.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/office_inauguration_invitation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/77977822985.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/7108333467.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/90665984978.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/thanksgiving_phonics_worksheets_for_kindergarten.pdfIn PDF document text
    • http://duziroro.myartsonline.com/muscles_of_the_forearm_and_hand.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/dubirixovuduputukakeja.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129F9 5604 bytes
SHA-256: e47d79dac8c0dd1f45b50a1680f28529ac7902fe094b256f85464f31c8b7c21e
font_01_sfnt_off00013cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CEC 12312 bytes
SHA-256: fca9c051c05e1152a7e3dc0f0feee20691a0b6efdd4e0848d9165929713a1f67

Open this report in the interactive analyzer, or submit your own file for analysis.