Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e7f032b42bda6b…

MALICIOUS

PDF

86.9 KB Created: 2021-09-02 00:22:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: e9f773e97ea8233e25a2150877299794 SHA-1: a891fbd46385b8db148c425b633642f944b9b1e7 SHA-256: 48e7f032b42bda6bedd6b30ae4905e6726f0003dd15499f630277c629aa1b217
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and link farm indicate an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 https://archism.ru/uplcv?utm_term=how+gcash+investment+works PDF link annotation
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7681f20b7---moxizowitokitosofatawag.pdfIn PDF document text
    • https://tabularasa.lv/sites/tabularasa/uploads/documents/files/49999692694.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160a243cb040e3---mekegu.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/zomuribelovubodaburo.pdfIn PDF document text
    • http://aumnat2car.com/ckfinder/core/connector/php/upload/files/bugeridisewimuf.pdfIn PDF document text
    • https://unibel.pl/pliki/upload/file/55402243457.pdfIn PDF document text
    • http://abpaluso.com/upload/file/zisixilepuxij.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/d0u0bc44rmr1gpv7acsefevdu7/40120397368.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a198cdd39e5---5219485495.pdfIn PDF document text
    • http://clair-environnement.eu/catalogue_dynamique/file/30224015764.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/f07c44a5680aafa52dcd96d78779802b/64090178151.pdfIn PDF document text
    • https://olterus.net/contents//files/zevitekatofivuluwi.pdfIn PDF document text
    • https://simon-daulte.com/ckfinder/userfiles/files/wiwinebinuserusi.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/43eb9d6c3da868d874fe73494094ca97/74242701793.pdfIn PDF document text
    • http://kiddeefire.com/media/userfiles/files/widirelidirip.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16078d14a0e9cb---46733090524.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/d9f0a257588abaf9b10ab89429a16ae4/luxufiv.pdfIn PDF document text
    • http://labonscafe.com/userfiles/zekedevuv.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/7f98b2fd99b68ed3742108ca2e8a537f/313037185.pdfIn PDF document text
    • https://posaonakosovu.com/ckfinder/userfiles/files/32894879930.pdfIn PDF document text
    • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/26655334063.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/bd0646b08a102cb89ad9fd2a93b9caa4/24448707501.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16081972ebd207---54249337124.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/7mp23jfr174pkf1e2gtkq8e775/wejurufinokegusila.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1611398beba145---61158563216.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_off0000ed45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED45 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10557 17956 bytes
SHA-256: 8ffc11056ae78a89c4e5e15324d34fe960363c0e9bffa3d499cce56dcbdc5d4e
font_02_sfnt_off000133e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E6 10868 bytes
SHA-256: 14ad63c176f7bbfb075159f0f1b6561a4c4838d39e3fe9f65b2f3820d2b7f538

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