Malicious PDF — malware analysis report

Static analysis result for SHA-256 049118cfbe82b81f…

MALICIOUS

PDF

83.5 KB Created: 2021-09-06 16:03:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 942b397e1bd5d0b1ad61438f6c2a3b2c SHA-1: 0ec03bf11d10e15a0914c01bc5702ac9bdfa4398 SHA-256: 049118cfbe82b81f864afaa0d32eef67bd05b10d8e9ed684831e4f251514d747
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains numerous links, many pointing to compromised WordPress sites, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the presence of external URIs and the nature of the heuristics point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608aa0693a135---51122422538.pdf In PDF document text
    • http://jkbprivateiti.com/userfiles/file/77027257065.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/nofolar.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/6htpcg01jqe6jc0qhag6rdeug2/fasotuwekozaxawiwiti.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f321607846---tibozitenigerinikidobafo.pdfIn PDF document text
    • http://szentimresiklos.hu/upload/file/jekadaviwiwexoke.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/bufigezabefowumizeganigem.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/e770819dc002337e8fe21a7f2ba881b3/4019664830.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/95625047686.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607c765533dcc---63574359138.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/a9d861617d92f33a2309d358806addfd/tasurimikipatopojo.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/belibi.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/4n94kmefja8neus4m3tr4fhkcl/27404405114.pdfIn PDF document text
    • http://geodez.com/pliki/file/32922224201.pdfIn PDF document text
    • http://freetds.net/userfiles/file/22452751054.pdfIn PDF document text
    • http://deleeuwputten.nl/site/data/ws/files/24861571906.pdfIn PDF document text
    • http://apothepharma.com/upload/files/wupobivo.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/96743398923.pdfIn PDF document text
    • https://dermatologie-francophone.com/userfiles/file/43294869518.pdfIn PDF document text
    • https://simondaulte.com/ckfinder/userfiles/files/xuwobunabesave.pdfIn PDF document text
    • https://www.pactforfamilies.org/ckfinder/userfiles/files/loxojidikinuzenudamakumur.pdfIn PDF document text
    • https://civilkontroll.hu/uploads/file/budobexolufijilipa.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160d2dcf94d73d---fopotinetevemibi.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160fd66b85bee8---gazesinupexenovofedoj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=gramatica+del+uso+del+espanol+b1-b2+pdfPDF 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_off0000d427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD427 11268 bytes
SHA-256: 8ab7ce13a861207850a2254bcc95a39dae97bd8522b0d13eb2794acb52ce9e07
font_01_sfnt_off0000ee89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE89 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001069b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1069B 21948 bytes
SHA-256: 105c35bccfba7bbbff0a96c0b7cbe9f7ad646098d9d4a2e8849a441e4918f859

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