Malicious PDF — malware analysis report

Static analysis result for SHA-256 030e0ead82789600…

MALICIOUS

PDF

75.9 KB Created: 2021-09-08 02:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: c84b428cf93ff54bc6c8fec232b3f316 SHA-1: cc30d9131c8de332e1ab381ed5a6d14d970f6ebb SHA-256: 030e0ead82789600a762120570ce5874e7c33a31770a67651b17ad13700d6fe1
136 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised websites, likely intended to obscure the true destination. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway scanning. While no scripts were directly extracted, the presence of numerous embedded URLs and the ML classifier's high confidence suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 6

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/6ffc2fd1a02402119b0e0f4aa118dd8d/23626596704.pdf In PDF document text
    • http://4bx.pl/public/file/25918450358.pdfIn PDF document text
    • http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/75766093081.pdfIn PDF document text
    • https://villatoscana-pi.it/userfiles/file/bexajoradunajigosofamo.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160854017c68f9---2004773784.pdfIn PDF document text
    • https://chiuman-hk.com/images/file/nutalazanefizepamorow.pdfIn PDF document text
    • http://wallsfamily1912.com/clients/876683/File/26136302642.pdfIn PDF document text
    • http://nujhimachal.in/img/uploads/files/jelexulane.pdfIn PDF document text
    • http://tecsun-moscow.ru/docs/file/39965777186.pdfIn PDF document text
    • http://pro-group.ru/userfiles/files/juzuj.pdfIn PDF document text
    • http://firmykominkowe.pl/Obrazki/edytor/file/dadisewuvogidelapajuned.pdfIn PDF document text
    • https://gencerenerji.com/resimler/files/viwib.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608b65e9293ae---mejirovopisixe.pdfIn PDF document text
    • http://rayer.cn/d/files/81669245772.pdfIn PDF document text
    • http://cottoneauto.it/userfiles/files/pizodaxuvosifogaxesu.pdfIn PDF document text
    • http://myjobcareer.net/userfiles/file/2021070523084673499.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/7c16985ea4953e33f0ddfb87d3a4c78f/kupaxubanumeperalurusis.pdfIn PDF document text
    • http://cameradungphat.com/uploads/files/33572757214.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/37ifn8md1kic9k4e83kj59m138/8000170771.pdfIn PDF document text
    • http://american-security-inc.com/assets/ckfinder/userfiles/files/31182110153.pdfIn PDF document text
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/053c51769a4e70c450a813cc8aad07bc/kidumekibudo.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/llfe2qrdambvoj8bvspohne8m6/80809254988.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=convert+pdf+scan+to+word+online+freePDF link annotation
    • 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://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_off0000c5a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5A3 10796 bytes
SHA-256: 859c46a1f8afe95245c62b74ed12ac5b77635d92a18d81f83e9306c272d64bdd
font_01_sfnt_off0000debb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBB 16696 bytes
SHA-256: 933b938d3eae216906476d75b65a23885b5e2cda3c23b0a8a0b7314e9d507346
font_02_sfnt_off00010a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A17 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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