Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b95b36a2f99c1e9…

MALICIOUS

PDF

109.6 KB Created: 2021-07-31 17:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: adf95da1fd7e760d15d4c368068ce030 SHA-1: 4a0856d56ee7f51a0788fd51190062dcc6e6fe53 SHA-256: 2b95b36a2f99c1e9bc9534fc976928f78e0b3c631d705c8dfdfe491afa071ea2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm pointing to multiple compromised CMS upload locations and disposable hosting, indicating a phishing or malware distribution attempt. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification also flagged it as malicious. The embedded URLs are designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8950

Heuristics 5

  • 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
  • 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://safaraval.com/basefile/safaravalcom/files/78510120959.pdf In PDF document text
    • http://www.biotanika.pl/upload/file/87015372898.pdfIn PDF document text
    • https://rkdestate.com/userfiles/file/zotigiro.pdfIn PDF document text
    • http://weorderfood.com/uploads/files/46614873900.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7f76318b0---24492629627.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/022tci7b0f7nj9asui6k2emsv5/31755320062.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d707074b2ad---13082253375.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab21d96fdd---78838691590.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/23051908f2a4453dacd2a793b234b93a/58486456869.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/69c4d5367e0e16326a1d07a7509696a6/93917605300.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/c695cede3efe5a238e437a832b46b7a5/laxez.pdfIn PDF document text
    • http://northmarking.com/userfiles/files/fobadadogegarila.pdfIn PDF document text
    • http://shuimotongyuan.com/userfiles/file/zorez.pdfIn PDF document text
    • http://thessalonikiflights.com/files/files/wovinozeg.pdfIn PDF document text
    • http://progetec.org/userfiles/files/fawonamagif.pdfIn PDF document text
    • http://sage-chem.com/image/files/20210620_062405.pdfIn PDF document text
    • https://proektasis.gr/admin/spaw2/uploads/files/jugojaxidesifuzinu.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16074b59666379---banagizakelozeporarizoz.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160965fe54c586---60191134979.pdfIn PDF document text
    • http://www.dramayaramendes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f540ec68bb---61594919548.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/58335289910.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c2dd64e5277---73357005777.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/70317309734.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/70205545426.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=the+power+of+critical+thinking+5th+edition+answers+chapter+6PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18954 18172 bytes
SHA-256: b15a7891498e51be0ec336ad4f42ca5c32b7a630ca2618731b6f9c59a241a699

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