Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a2a34522eed3e5…

MALICIOUS

PDF

75.0 KB Created: 2021-06-25 22:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 4c963ef10d461b3ff1bc525b8912f9be SHA-1: 2bac10ad5d7edf30d17ea6bcf61427ecd5aff8d6 SHA-256: 74a2a34522eed3e5c48ada1ce3176eb60e9e19578eee0cff6e80c59880e21680
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a Business Email Compromise (BEC) attack, specifically a payment redirection lure. The presence of numerous external URIs pointing to compromised WordPress sites and disposable hosting suggests an attempt to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving exploitation of PDF vulnerabilities to execute further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://crewmak.ru/uplcv?utm_term=trades+that+pay+well PDF link annotation
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b25571920af---nojimo.pdfIn PDF document text
    • http://unesco-mediain.cz/fckfiles/file/9608507835.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607afc7c143e4---56205209582.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/rufarusisosazibezav.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1608e159e73c18---ganozurupuki.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/ougs6iaj1i8j6loqonr3n2d8l2/nesenevosenakevan.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/7404027754.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/bb1157ec405d09ea31d9a4b1a0a9799b/pelejavunurowowaliti.pdfIn PDF document text
    • https://ivaco.it/file/wikutamejupukutotexevib.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608417b2d274b---fasuvekazavalidijowoza.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fd5ae2bd9---66871259943.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/66m66cj2k8jor936960grq5sl4/rezikatebarenurilin.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/xoguxidapozijudawotirir.pdfIn PDF document text
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/kepubetudugubavuj.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/d28434965cbf95edda701d09d016c8cc/kokegobanawuw.pdfIn PDF document text
    • http://eltonltd.ru/sites/default/files/uploads/puxiliwedike.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/hmo9c8e8bu6eripb7b44t8lvl4/sizafosobomik.pdfIn PDF document text
    • http://uelzecht.lu/userfiles/files/vevuwipigajota.pdfIn PDF document text
    • http://3e-recycling.ru/app/webroot/filesfiles/40705378191.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/3cd392f14f30f38833d54a931cd3d0e6/61765613222.pdfIn PDF document text
    • https://blindnow.com/userfiles/file/fujijewoxinutoxokiwewin.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ba3c93fb0---81542799593.pdfIn PDF document text
    • https://mfdesign.hu/files/file/83939066205.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/5b1np5c9vo3h38u7kb0j74bc60/topuvuzesuriwove.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://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_off0000c7e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF2 15536 bytes
SHA-256: 7f0c39806bff4c0597f58d418f7106ccb0fa1d4f332512713fa522f3077bbe6b
font_02_sfnt_off000107b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B0 10336 bytes
SHA-256: 2987b56ac4007f5acf41bc9558a55ef876f99964ba3ee6011694124ed3af27e3

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