Malicious PDF — malware analysis report

Static analysis result for SHA-256 6434204f3b84f4b2…

MALICIOUS

PDF

73.7 KB Created: 2021-03-20 16:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f8074bb3bea5efc9db8893e7529c700a SHA-1: 54088c9c5f0657982cdeb135fb76de1c2c991ac0 SHA-256: 6434204f3b84f4b2f133b1a09803196e0dbf5ea9edba3cb4a010a99b02ad5d6b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'resalured.ru', which is likely used to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to real estate exams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/123?utm_term=national+real+estate+exam+cheat+sheet PDF link annotation
    • http://options.expert/81724894978q7j9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465007/normal_604d95674710f.pdfIn PDF document text
    • http://ketadiets.site/free_easy_ukulele_songs_sheet_music2p4zx.pdfIn PDF document text
    • http://zawezumibinigot.iblogger.org/47945760813.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413865/normal_5ff4cf34ef0c6.pdfIn PDF document text
    • http://ses-paypal.com/16115009737q00z9.pdfIn PDF document text
    • http://badge-verification-center.com/floodplain_management_in_australia_best_practice_guidelinesg995a.pdfIn PDF document text
    • http://vipadminler.org/42649484677y5ijk.pdfIn PDF document text
    • http://podarokinsta.online/hamilton_beach_22_quart_roaster_oven_cooking_timesn9pdb.pdfIn PDF document text
    • http://iminn.ru/2000_mercury_150_efi_fuel_filterodxvl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kebafitesulodu.epizy.com/sevebuvesunavupaxizi.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/craftsman_table_saw_router_fence.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/business_expense_report_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/kadhal_kadhai_full_movie_free.pdfIn PDF document text
    • http://nufukajipopo.rf.gd/juwiruzujonefinujosirow.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/soil_aggregate_formation_and_stability.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/boccaccio_decameron_italiano.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/iron_jawed_angels_viewing_guide_answer_key.pdfIn PDF document text
    • http://zatomad.epizy.com/dremel_4000_vs_4300_uk.pdfIn PDF document text
    • http://lirepotinemos.rf.gd/credit_score_report_password.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_off0000e3a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A0 5076 bytes
SHA-256: 8d9e84213ab1aeb0b604fe4d8240de187c1509558d6aa3b52dc9f4eef79dbb44
font_01_sfnt_off0000f4c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C0 10784 bytes
SHA-256: a8da333ce1982b4e47e291c1258d1e06c90f2e03c4cc8bc6615cbe52a064ccd7

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