Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e9dd072274c090d…

MALICIOUS

PDF

103.0 KB Created: 2021-06-27 22:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: e8dbfb0c90539f4653e044747f24e11d SHA-1: 5c5f57a5de4d71b90e94277acefcff796c6617fa SHA-256: 0e9dd072274c090d0d39ac374f96c638a9c93e92b585da040b595496e690329d
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which appear to be compromised or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious content, likely a phishing or malware distribution lure. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic confirms the presence of a link farm on disposable hosting, suggesting an attempt to obscure the true destination or spread malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9790

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://mientaytourist.com/uploads/files/xapeniju.pdf In PDF document text
    • http://artechq8.com/beta/uploads/files/womuzifezunuzamekes.pdfIn PDF document text
    • http://artetendasud.it/userfiles/files/rodepigezerel.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/c90486f3b1501047283f2a807672814c/58442525293.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd61a6b6ad---gefedijipodi.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/gbd4hqeh2jp6bgneju747oe27k/givonalekowes.pdfIn PDF document text
    • https://hkbca.org/UploadFiles/file/20210523142711199.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16098bb9a40be8---miwaxazuwog.pdfIn PDF document text
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/513fa24fa7524562afe6bf77e1947ed2/jilujigimaz.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/0f8748d146403017157295d336227aca/37956455516.pdfIn PDF document text
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/vuwatafu.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/383d97cc2954d9a2e6290911600129c9/20631169783.pdfIn PDF document text
    • http://svsteinfurth.de/radsportfiles/file/kararoxidogufuxib.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/87e14a08b95a08bedcd9cf811c43e12c/34803508247.pdfIn PDF document text
    • http://omak1968.com/clients/71178/File/91484576115.pdfIn PDF document text
    • http://goldnumber.info/userfiles/file/6375687347.pdfIn PDF document text
    • https://phoenixturkey.com/upload/ckfinder/files/87403261637.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607496b24cd7b---liboge.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/16454881134.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/jslsnj9icqie9cnd1mrsvprm57/39190183133.pdfIn PDF document text
    • https://acryl-bg.com/userfiles/file/paroremekusoz.pdfIn PDF document text
    • http://laclonghotel.vn/upload/files/borupifidelunopifiwa.pdfIn PDF document text
    • http://indyztyle.com/ckfinder/userfiles/files/gekowomiwilabukamina.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/2el53jb2i9g6tdmn9t3e2bbtgu/94078883040.pdfIn PDF document text
    • http://www.klimavill.com//data/editorfile/48090722605.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/f6a8d72154831e13288c8214811115c3/fajogevakifotewakorusedug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=how+to+get+sun+and+moon+dragon+in+dragonvalePDF 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_off00012d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D25 18356 bytes
SHA-256: 0d407fe42012396a5eb9c171c2bc7179d03d31958f4ba54dd0395065c5d007ed
font_01_sfnt_off00015d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D46 10836 bytes
SHA-256: 206022da42bfef659e2eee1d97f5887d31cb47ac1b11b7f395b0768e6afd0529
font_02_sfnt_off00017613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17613 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1