Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dfaa0ede0cbcb9c…

MALICIOUS

PDF

131.5 KB Created: 2021-07-24 12:51:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18
MD5: ff1d69e6b07a191fced18d489289b78b SHA-1: a86e079bc0d5bbfbb49218f3b2171f93fddc7971 SHA-256: 0dfaa0ede0cbcb9cd2f2e43d24857711baefcfb50263719a2c351d410671a856
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm that points to multiple compromised WordPress upload directories, suggesting an attempt to lure users to malicious content. No scripts were extracted, but the presence of numerous external links indicates a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/coct73mjlb7q5huom0egk1oqt0/kurujunazopedofo.pdf In PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160768b9d08300---pelirinitufitonotaj.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0b3a8c2645---51662245348.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba4f0868c02---66806498422.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/14302500000.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608533e437d2a---pofesawovufowalikude.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c8855736ef0---32071830913.pdfIn PDF document text
    • http://inercial.es/uploads/files/29116518089.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a772ce76531---wufepewik.pdfIn PDF document text
    • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090b6d8de255---wosusolu.pdfIn PDF document text
    • http://dothi.info/images/files/3191375098.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160966e84a6b7e---22085264472.pdfIn PDF document text
    • http://nbnjl.com/userfiles/files/xelusozivox.pdfIn PDF document text
    • https://thegioidongphuc.net/ckfinder/userfiles/files/4478096879.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd8db38c3e---kijakudoxitob.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/30530649748.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/09034ae3b5403e1551a7772ce5800e64/70220359525.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/b6c68e68be9ccc7786f3756c7fc2b829/40474438949.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/9609254c14b54b278fabbb850e4a48a1/68026981628.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160763242e56b4---28009190643.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0c2bec61ff---sigamed.pdfIn PDF document text
    • https://grupo-kayros.com/userfiles/file/sosisam.pdfIn PDF document text
    • http://mopi.eu/ckfinder/userfiles/files/sivirakumexaxakawupel.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=piazzolla+libertango+nikolai+kuznetsovPDF 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_off0001941f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1941F 23364 bytes
SHA-256: 1f30b5181cd2d65beb85db711861bbd55d880e351dc0284066645b62f45cd1c2
font_01_sfnt_off0001cc62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CC62 10744 bytes
SHA-256: 43a9f87da3ac6639742d9bcbd9b1a84aff9f70f632e65337affbb32a4e0b2d9e
font_02_sfnt_off0001e54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E54C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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