Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d548fec8682aae…

MALICIOUS

PDF

92.5 KB Created: 2021-09-01 00:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: aafaf451083b12b33345b61d1bf87133 SHA-1: 44cabf23c0ad5d1612cab5981707f369f62b974b SHA-256: 01d548fec8682aae85d3622a5d721556e739ee086882922627d9ef86c4a096f0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan, and an ML classifier indicating maliciousness. The document contains numerous external URIs and links to compromised CMS upload storage, suggesting it functions as a link farm. The primary purpose appears to be directing users to potentially malicious websites, likely for phishing or malware distribution, as indicated by the presence of external links and the overall detection profile.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://allytemp.ru/uplcv?utm_term=7+days+dry+fasting PDF link annotation
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/lisj602cna556benr0pvlb7r17/vefivajanikudosidogik.pdfIn PDF document text
    • http://dafangtour.com/fckeditor/userimages/file/xedunobinogilawidopevunon.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/bezisamevemubawemiranu.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/e09e08391022027ff41433ea312128e6/tuzepapefiruto.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/t881onbvnaim9sa7lhkqjukd4m/fanibimozoz.pdfIn PDF document text
    • http://cgpreceptor.com/ckfinder/userfiles/files/88194551966.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/f25fe85a0a62ba3cc1572fa48c4a2c2b/golesudalexefa.pdfIn PDF document text
    • http://bukhatirhomes.com/userfiles/file/fusegituxogefetoxas.pdfIn PDF document text
    • https://giorgiosantinelli.it/file/28078314604.pdfIn PDF document text
    • https://xuanhongkhang.com/upload/files/nexura.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/655811575a90427180b8bba2e130695b/pipalopujiboganamo.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/ja6tb8hc02rudnfbjens739da6/dipexamoxaburimafeni.pdfIn PDF document text
    • http://brbud.pl/userfiles/file/wewufafatazi.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/01fbbc00bbbba2bf9393c3776a36037d/pepoxor.pdfIn PDF document text
    • http://creptiles.dk/userfiles/file/94438436501.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/69289806ba13180c4b569b15c78ef857/27291531368.pdfIn PDF document text
    • http://tunesistudio.eu/userfiles/files/sadelovuzosibij.pdfIn PDF document text
    • http://iucecb.com/files/file/54816268183.pdfIn PDF document text
    • https://mumegram.com/userfiles/file/71990413334.pdfIn PDF document text
    • https://rivaflo-south.in/userfiles/files/kakapuwonokolawizuriwekat.pdfIn PDF document text
    • http://wjcopy.com/upload/files/35158238640.pdfIn PDF document text
    • http://lhdrum.com/User_File/UpFile/file/20210605142741_OTExNjEzODgzODY=.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16120b7202afd8---17404741715.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f4ebc0d3b7---rotanisabexa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E8 17452 bytes
SHA-256: bfe3c90cd0209648a3c0704bf8daeb270e7bf4c50365db4ae86fad2d056e1257
font_01_sfnt_off000134ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134CA 10296 bytes
SHA-256: f3d6d798e0c95b90256023164bee286adb941483f4e502b8f07c69da81d1eb82
font_02_sfnt_off00014be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BE3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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