Malicious PDF — malware analysis report

Static analysis result for SHA-256 410addc6e334585c…

MALICIOUS

PDF

78.8 KB Created: 2021-09-18 00:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 2c5d83f2aab4aaf17c84d88ea14eebe3 SHA-1: 645a81868a4a6fbf057e626dbb36cbd297ebaec0 SHA-256: 410addc6e334585c3e8d816944713b95df89dbc7ffdd0f07ad8fd2bb4789d914
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely responsible for initiating the redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://inwebjor.ru/uplcv?utm_term=jurassic+world+fallen+kingdom+watch+full+movie+online PDF link annotation
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/qkrh8ea8379ljan138m56dohp5/29473718558.pdfIn PDF document text
    • http://spy-military-labs.com/userfiles/file/81756913745.pdfIn PDF document text
    • https://used-machinetools.ro/app/webroot/files/userfiles/files/wajovefi.pdfIn PDF document text
    • http://xahuaheng.cn/userfiles/file/siguzulebe.pdfIn PDF document text
    • https://red-adlay.com/upload/files/mezuwafaviturosajiza.pdfIn PDF document text
    • https://hoalavender.net/upload/files/kurixobinusabakutopuniz.pdfIn PDF document text
    • http://sumosushingrill.com/uploads/files/19406200429.pdfIn PDF document text
    • https://szalkasszorutacskok.hu/app/webroot/files/content/files/togejipuxemupixafogapa.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/158f9esaanrb1d14dfsb1uhkce/71501356866.pdfIn PDF document text
    • http://hamkr.com/userData/board/file/79117161635.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/rekimelir.pdfIn PDF document text
    • http://dungcubepgiangtrinh.com/webroot/img/files/miduvifikezesitefonaf.pdfIn PDF document text
    • https://taipeitccia.org/CKEdit/upload/files/28144157238.pdfIn PDF document text
    • http://brno-skoleni.cz/ckfinder/userfiles/files/72380297396.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/161450901a03a2---daburejawoziza.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/tuvitejokipa.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/nf37darvimvglstin3lji9k1ua/vetodilabufamodupeg.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/36673227969.pdfIn PDF document text
    • http://olympiad-bigben.ru/ckfinder/userfiles/files/xumewewoporowupifal.pdfIn PDF document text
    • https://ipssecurityconsultants.com/ckfinder/userfiles/files/veperinu.pdfIn PDF document text
    • http://grabnerestriche.at/40044513399.pdfIn PDF document text
    • http://www.rannatennis.ee/data/upfiles/files/11855844941.pdfIn PDF document text
    • http://nuovartea.eu/userfiles/files/81809713675.pdfIn PDF document text
    • http://www.look4job.gr/images/_user_na/file/40143887638.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_off0000cc78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC78 17848 bytes
SHA-256: fa4bccfde69d31e14fd86d5133c92e9c6b86b995f6a4c34439a3da95aa4efa4b
font_01_sfnt_off0000fae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000112f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112F9 11260 bytes
SHA-256: fd21af3f8e5dd1a688ffecf11ba28f4549bfa5f09593e0953bd9e003f91f864b

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