Malicious PDF — malware analysis report

Static analysis result for SHA-256 801e74f954188ac2…

MALICIOUS

PDF

122.0 KB Created: 2021-09-08 09:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 05caf1875335e46dfd49b12dedf14ef1 SHA-1: b1814ca56f0411c38d2b9519373553603851e7ef SHA-256: 801e74f954188ac29c889da225f8bdcf4400d5b3259b19d5489cdcf3c857264a
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs that point to compromised WordPress sites and disposable hosting, likely to distribute further malware or phishing content. The presence of multiple external URIs and link farm heuristics strongly suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://one9five.com/userfiles/files/42594324307.pdf In PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094c30c5b879---14488714562.pdfIn PDF document text
    • https://osikovo.eu/webroot/img/content/files/68795401387.pdfIn PDF document text
    • http://fashionflutters.com/ckfinder/userfiles/files/mixaxipixotug.pdfIn PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/8518b403706e9911d6663e526d60fd07/solugabasopi.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/jnkgifdprftv3m9fe1ha0ame2t/61211559153.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/e5174c1e78697b18870a138c167dc648/67237143834.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/7254521634.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/d19c607cb8ca06bfb31bd7a7930ec637/54445280851.pdfIn PDF document text
    • http://casaperferiesantamariagoretti.com/writable/public/userfiles/file/15785104215.pdfIn PDF document text
    • http://playbabydoll.com/userfiles/file/fiwurevemejupu.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a72023519---52558614333.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b6c05c884---zukawop.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b60bcba0d40---fikam.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.fr/userfiles/file/zabafujeninogebefukipot.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/13075693168.pdfIn PDF document text
    • https://lifecareproduct.in/ckfinder/userfiles/files/58352472778.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/odnl1iv82u87g254qp8ljcghpd/63414997004.pdfIn PDF document text
    • https://creteservices.com/FCKeditor/userimages/file/tabowifomojap.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad043d56aa---46004831658.pdfIn PDF document text
    • https://meganimal.pt/site/upload/file/13740935067.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=char+griller+smoker+manualPDF 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_off0001727c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1727C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00018a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A93 10680 bytes
SHA-256: b0b3493f05a510cbaae9674b9f5095f21032780681ba66190b79347ff913a269
font_02_sfnt_off0001a2de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2DE 21216 bytes
SHA-256: 6f0a7186b7578c9cda2183877958fa1220a6667ecb3fe18592afcfa2e6dc76dc

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