Malicious PDF — malware analysis report

Static analysis result for SHA-256 a275430320804bff…

MALICIOUS

PDF

76.8 KB Created: 2021-01-12 05:53:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 29f30e3cbe6af9877f33009df72cd853 SHA-1: c84564e78c4ea5db517c1202767e65a30b48ca84 SHA-256: a275430320804bffebde7e774a08e08785431f478469adac050d9dc41c79693c
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. An external URI was found embedded within the PDF, pointing to 'https://traffnew.ru/123?utm_term=funcion+cuadratica+ejercicios'. This URL is likely used to redirect the user to a phishing site or to download a secondary payload. The presence of an embedded URI in a PDF commonly indicates a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=funcion+cuadratica+ejercicios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5f963606d9030.pdfIn PDF document text
    • https://site-1178541.mozfiles.com/files/1178541/woodshop_dust_collector_system.pdfIn PDF document text
    • https://site-1167950.mozfiles.com/files/1167950/bezafibesuburogobematijum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367687/normal_5f874fa52cf34.pdfIn PDF document text
    • https://site-1173692.mozfiles.com/files/1173692/minecraft_world_names_funny.pdfIn PDF document text
    • https://site-1168463.mozfiles.com/files/1168463/booking_extranet_admin_login.pdfIn PDF document text
    • https://site-1179256.mozfiles.com/files/1179256/train_driving_game_free_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gesimefav/hieI0kj/81276821993.pdfIn PDF document text
    • https://site-1175702.mozfiles.com/files/1175702/13674998667.pdfIn PDF document text
    • https://site-1219602.mozfiles.com/files/1219602/czech_republic_visa_application_form_in_ghana.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/tarajix/h_pylori_guidelines_naspghan.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/zovuwoniwiwezop.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/ramadan_calendar_2018_lahore_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/witufarunij.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/tubogem.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/ajith_family_photos_hd.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EC 4932 bytes
SHA-256: 21ca4268e4fe15b452daec8365f2ff97ba1419c61af1391d52a987620a5a934d
font_01_sfnt_off0000e8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C7 11820 bytes
SHA-256: 1339008ca45066d907d24c982bc6cdbacdf1b01eed346da924a84749b80c7fac
font_02_sfnt_off00010f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F90 16144 bytes
SHA-256: fb10e5badbbf29d6a05184c763452604a6d256f7c208a2bb674868c670b14a78

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