Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b9eb5f06b4b1226…

MALICIOUS

PDF

100.5 KB Created: 2021-09-01 00:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ce48c676283f6d0862332f77f9ca5ef9 SHA-1: 5bc007fa28369f4f2786c6b1e757690d50c4cc93 SHA-256: 9b9eb5f06b4b122676e2b4d3095c5914e66e5fe5a0db96ac2b0415c331b1daef
156 Risk Score

Malware Insights

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

This PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites, suggesting it's used as a lure to redirect users to potentially harmful content. The presence of multiple distinct hosts and the use of 'utm_term' parameters in some URLs indicate a link farm strategy, common in phishing and malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://szakkepzosiklos.hu/upload/file/jalilani.pdf In PDF document text
    • http://yaqeen-eg.com/userfiles/file/56967618688.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/3e6fe4de4076580c785d976e94f78596/99974302697.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d55b86c7913---wewokiwunuban.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084d09e37e14---bivirijobukul.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/lejujokes.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c85d2a1880e---68485948492.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607591f9efaf3---zoworefa.pdfIn PDF document text
    • https://sbsoftware.ro/admin/userfiles/file/28558880353.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/dm3orvgv8uqt7onrs00fu3ev5j/27436737441.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1610e60a5c9fbe---lefuwobonekewunulebedesid.pdfIn PDF document text
    • http://halongbaycruises.org/upload/files/89425189680.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4c1aa169d4---manoluxabolirozap.pdfIn PDF document text
    • http://peaktoppet.com/ck_imgs/files/1031247396.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/73445817691.pdfIn PDF document text
    • https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/14941790670.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/cc9298fc383498e005d29e70e7f20976/8473141668.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1610ea2722316a---49217533438.pdfIn PDF document text
    • http://videofilm-tv.ru/content/File/13327778533.pdfIn PDF document text
    • http://www.tekkoo.net/images/library/File/24461095185.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d69612c277b---kiditipaduwaveju.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/41991306ff9886e33eed64c41e5d7775/44178980642.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ac6fd6111---75783598046.pdfIn PDF document text
    • http://shosholoza.de/file/bafiwil.pdfIn PDF document text
    • http://inlygiaylynhua.com/upload/files/tavidijizumemamoliwedujaj.pdfIn PDF document text
    • http://allycatering.com/userfiles/gurijejefixeselodegaz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=recipes+quick+and+easyPDF 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_off0001230c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1230C 10640 bytes
SHA-256: 209b257aa30e3be12c83c4097748d350bdb65f69d1564c0d1bd1dec7db5f9142
font_01_sfnt_off00013b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4E 18544 bytes
SHA-256: 01da5c2d7bc56ca677ebe36a9b157cd22c8ad29f128e1441ff438dfcd3a51873
font_02_sfnt_off00016bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BC1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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