Malicious PDF — malware analysis report

Static analysis result for SHA-256 175c45b7885c401f…

MALICIOUS

PDF

114.4 KB Created: 2021-06-28 16:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 79d243bf3412de1cf9f1e0ee953cd63f SHA-1: 1c51865a7f4780af2ab5499bb9e93cbd3fd266ca SHA-256: 175c45b7885c401fa1121123dee5a346ad54e64bbac981a8cd2bcca4e282cedd
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress sites and other domains, likely intended to distribute further malware or phish for information. The document body is unreadable, but the heuristics indicate a link farm structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/9f5d44185381e9fab631762794d349e6/58505950221.pdf In PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/ef1211a8a6d3b0d39442ea2fcc64a143/lologuduvajavifedi.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/v7qrtp7s28kct9qvq82a4opjju/rajiwewesizaditazosis.pdfIn PDF document text
    • http://rajskiewakacje.pl/userfiles/file/53018354956.pdfIn PDF document text
    • http://samafb.org/uploadfilefiles/xetubeveb.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606e57f562810---61532117393.pdfIn PDF document text
    • http://phuvuongcorp.com/luutru/files/12209295810.pdfIn PDF document text
    • https://aventura-agence.lu/userfiles/files/79580566922.pdfIn PDF document text
    • https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/7aacbec977a36fb511b4718408616246/59822792673.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a2caf34be08---6902089327.pdfIn PDF document text
    • http://fedoro.ru/upload/file/kizererikutef.pdfIn PDF document text
    • https://horizontire.com/userfiles/file/60664045506.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6857dec3d---20880178776.pdfIn PDF document text
    • https://loctra.net/userfiles/file/28161580448.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16080620803368---gemazisotolalulakedaluk.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16079ba3404bfb---madoloso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=crystal+meaning+in+bengaliPDF link annotation
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/316bb302f943272698ce57bb677199a3/turogenuse.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B00 18376 bytes
SHA-256: c34964ed0ca8673151baae2ea7c4b6fb656adc4cbc76c472e94a65231d96e958
font_01_sfnt_off000169ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18205 10616 bytes
SHA-256: e2eed33033385791a4575f98e47d1ceabdd88871e2ab4298430ade64ad300eeb
font_03_sfnt_off00019a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19A4D 16396 bytes
SHA-256: 63682e1d167a89e2aab704ecca9d5bfe81569cf3216d523e67847ac5befcd24e
font_04_sfnt_off0001b0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B0E6 2476 bytes
SHA-256: beb870b3df0697a904aee8f38f30cca2c73e90c5947b21665447d48e9017110f

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