Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d7fad1ad6dbd45f…

MALICIOUS

PDF

78.2 KB Created: 2021-04-03 11:06:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ac9632be20631f2c8ca546f9933c11f0 SHA-1: 785e8a59673adf6e8dd2c3e3fdd7eb641b3dc5cf SHA-256: 5d7fad1ad6dbd45f13478048971dc66e33e84d3190ddcc69b628d407a05c8500
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a suspicious domain, identified by heuristics as an external URI and flagged by a machine learning classifier. ClamAV also detected this file as a phishing trojan. The document body, though partially corrupted, contains text related to the URL, suggesting a lure to a malicious site.

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://soxebez.ru/strik?utm_term=who+is+the+shunammite+woman+in+the+bible PDF link annotation
    • http://jelebojibujij.iblogger.org/63926395364.pdfIn PDF document text
    • http://vasakuso.sportsontheweb.net/bonjour_tristesse_gratuit.pdfIn PDF document text
    • http://matorebaxemipiv.22web.org/upsc_cds_1_2020_notification.pdfIn PDF document text
    • http://wekixazijexamip.iblogger.org/97344705013.pdfIn PDF document text
    • http://goproits.com/graphic_design_portfolio_bookfd6p0.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/mathematical_induction_trigonometryxte0r.pdfIn PDF document text
    • http://dusanaputojinon.mygamesonline.org/non_availability_form.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a2103c0-359f-47de-bcf0-ed1f79199a80/ny_driver_license_expired_renewal.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/solving_quadratic_equations_using_the_quadratic_formula_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c60a96ba-9115-4c07-bb3f-4fbd39997466/polk_magnifi_max_sr_wifi_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/mobuzalikusafe.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/lararibinoragodizoz.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/day_of_the_dead_bloodline_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a057a148-0714-4650-ac97-c32d5845e7cb/how_to_fix_a_wii_that_wont_read_a_disk.pdfIn PDF document text
    • http://guligakifiw.epizy.com/49235782509.pdfIn PDF document text
    • http://xidijunuv.rf.gd/big_book_awakening_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/cyber_hunter_size.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/61996421034.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/70708393845.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd751ad6-b21f-40d7-87b8-a172ca6299aa/jobifaxatisesunip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64dedb69-e008-4523-ba2f-b11b32716c9f/vikadojebewakewewinower.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_off0000f544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF544 5072 bytes
SHA-256: 4823f16bf13d18cc670204462c012005f855ad013af09ac4c5b32e5fec41308f
font_01_sfnt_off00010679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10679 10708 bytes
SHA-256: d6ee7aac6bd98396d5b0bd1cf6fb5e589c87e263272fd49a07cf3849f9f59fc4

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