Malicious PDF — malware analysis report

Static analysis result for SHA-256 05754a1625aa19a0…

MALICIOUS

PDF

83.5 KB Created: 2021-09-06 03:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e922a6a34da1396ea773e07ee2275e6c SHA-1: eefdfad29621d4526fe56409db363a72ba8cfff6 SHA-256: 05754a1625aa19a0a0f753f6842e84bcee765aa1b47dc7b34290da97d5701a4c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall detection profile indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a57f6964e5---goramovokenajaxitupi.pdf In PDF document text
    • http://morecoredesign.com/images/imageUps/files/liduguxuworunolulujax.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/d731af0f0c5675285c7bbf7ae7e0c4ea/87712207377.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16078200a7112c---vubipim.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c30a2117355---33635046490.pdfIn PDF document text
    • http://testplanet.nl/uploads/files/feduvepegikoduv.pdfIn PDF document text
    • http://lagunaapartman.hu/images/user/file/90912158863.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f0368b2a7a1---22696519398.pdfIn PDF document text
    • https://netiko.fr/img/Data/file/lugelonaziwovororutijode.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608439141fe3d---vutunizaredo.pdfIn PDF document text
    • http://elateridae.com/images/FCKeditor/file/87608453516.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/4aoh6jh5up4a9qu8gfbtnvtml6/nozukezorarupefoz.pdfIn PDF document text
    • http://veraschwemmle.de/fckdata/file/minukit.pdfIn PDF document text
    • http://famillespourstarlight.com/clients/a/a9/a9b42c05011d3bb27e7f7ec2ed30324f/File/23903511486.pdfIn PDF document text
    • http://optykglowacki.pl/obrazki/files/48476410795.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/46f15b3f58c1e7a4d5ec87729acbe817/50249527872.pdfIn PDF document text
    • https://homecareangels.ca/files/files/files/46329401072.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e376fd4373---17192720079.pdfIn PDF document text
    • http://litho-and-co.fr/ckeditor/upload/files/vevuj.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b071283c6ea---89429162923.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b4a5b5f19b6---jebugunimuxubofomopori.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/e8ff1e64e4db4f5aa82252d50769bf53/68631069863.pdfIn PDF document text
    • https://wecareu.net/ckfinder/userfiles/files/42302489944.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe24a8a0e2---pikubi.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160767ac51ac07---5322443633.pdfIn PDF document text
    • http://apluskleaning.com/admin/images/file/42831199510.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/f00ccf00a0deff87a26cc42d413424d4/31671361941.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=francis+turbine+pdf+nptelPDF 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_off0000e378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE378 17344 bytes
SHA-256: 461c88c55b4703c65ddb06c835ff4e1c6092833fc9fde7735935ad3222687d31
font_01_sfnt_off00010fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD0 10708 bytes
SHA-256: a4f442caa5201f7f8cfa67d2e16801d6d8d5a2fc477a304a8160b0a7b54e4991
font_02_sfnt_off00012841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12841 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1