Malicious PDF — malware analysis report

Static analysis result for SHA-256 c153e2075b7b8279…

MALICIOUS

PDF

72.3 KB Created: 2021-03-17 16:01:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1ff72619a46f3c9d491d638bfdcb95b6 SHA-1: b0dda10f5b58463a915cc3ecae54056b18344f10 SHA-256: c153e2075b7b82792c546b643c1e5d6ce6b268c25ee965758786414fc0a5a8b2
104 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier, indicating a high probability of malicious intent. The presence of a PDF_URI heuristic pointing to 'resalured.ru' suggests the document is designed to redirect users to a potentially malicious site for downloading further payloads or engaging in phishing. The 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=english+conversation+18+with+subtitles+1 PDF link annotation
    • https://cdn.sqhk.co/pimibopugugo/klyn37I/android_auto_waze_problems.pdfIn PDF document text
    • http://safagiko.iblogger.org/black_anodized_sheet_metal_screws.pdfIn PDF document text
    • http://ravanusos.iblogger.org/a_political_theory_of_foreign_aid.pdfIn PDF document text
    • http://volosaty100.xyz/motorcycle_bike_car_game6f53v.pdfIn PDF document text
    • http://pokemonrivals.online/pigubivolarapedojowegiizy6q.pdfIn PDF document text
    • http://faromobipon.22web.org/navient_deferment_online_form.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/zogununiromawupubulugen.pdfIn PDF document text
    • https://cdn.sqhk.co/foradimotiri/ngftmw9/best_spreadsheet_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/boCidie/best_home_renovation_shows_on_amazon_prime.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
    • https://s3.amazonaws.com/votawawo/economics_vocabulary_crossword_puzzle_answers.pdfIn PDF document text
    • http://wifiwaxaranuf.epizy.com/how_to_find_wps_pin_on_bt_router.pdfIn PDF document text
    • https://e028ba52-6c86-493e-86b7-fecf7cd1c3eb.filesusr.com/ugd/bcb9fd_be93a51ce6d749c39d9f8e6ce09468c8.pdf?index=trueIn PDF document text
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_0ff2791831534228bd5243d43004b5ec.pdf?index=trueIn PDF document text
    • https://ba10d46a-d7c1-43af-8542-f1a50f31aa8a.filesusr.com/ugd/4dded2_64e3965eb02c40a1b837c5fa580cfc56.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/correction_of_sentences_with_answers_online.pdfIn PDF document text
    • http://gamelaluwer.myartsonline.com/bofelinetoju.pdfIn PDF document text
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_2f05d91d2ac148f182c099c6e4f8847c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/division_worksheets_for_sixth_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/34076293309.pdfIn PDF document text
    • https://3b9c8e93-52ab-41e8-96f8-e5fc639bf6fa.filesusr.com/ugd/fe3ccd_1b7596d9edcc4222a261c13a72698312.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ragejufa/waginofimenifatugakeb.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d10d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10D 5436 bytes
SHA-256: cd27cd812a9eb1c42ff861bca1c01c992e1ad3e2027158f019bb09398d6a458a
font_01_sfnt_off0000e39d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39D 9812 bytes
SHA-256: 1f3bec9ce3a0422434d49407b1fee1b51f8b63e4ae5f980f65034a6f89b92b31
font_02_sfnt_off0001052d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052D 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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