Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0ca30a22de08e2…

MALICIOUS

PDF

94.9 KB Created: 2021-09-04 05:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: c45eed7188403d9747e7ba7e59b7332f SHA-1: b8dfce01916554909813bf1316fa984868a30b32 SHA-256: 2d0ca30a22de08e293ce7207bc1e2d1becd0f336a52f4f8d9b7d077455c215a9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a PDF link farm pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5a4bac0dbb---34978694708.pdf In PDF document text
    • http://zuche0551.com/upload/file/natuvi.pdfIn PDF document text
    • http://soflocops.org/clients/83264/File/nevojatebonedikisobiw.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/ff43e656feaa09e1780112d8d709a18b/nelalisotutijam.pdfIn PDF document text
    • http://meyanko.com/userfiles/file///nipepowemexasovixid.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/smbkant1m4mksjcjqbdgod1b5k/4010330508.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/9b7082bb402880c99f84b2b8ecb63ba3/42711146826.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac67d2d695c---4627434026.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da0ed468d80---ripibuxazu.pdfIn PDF document text
    • http://applexin.com/ttpsea/files/file/kukavatixilazowoxolarebe.pdfIn PDF document text
    • http://sdds.be/userfiles/file/5273656431.pdfIn PDF document text
    • http://ckrestaurantgroup.com/ckfinder/userfiles/files/pudum.pdfIn PDF document text
    • http://www.gpkoaee.ru/ckfinder/userfiles/files/wafotijowexe.pdfIn PDF document text
    • http://veejaytechnologies.com/userfiles/file/xetowepopanuludamuku.pdfIn PDF document text
    • https://agronlogistics.com/userfiles/files/tepukefina.pdfIn PDF document text
    • https://dailyiat.com/html_upload/file/mamebovipejunewuda.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/eoverkf4a62uu96r9of18sd2n7/84668856414.pdfIn PDF document text
    • https://gamepinleri.com/calisma2/files/uploads/94398649413.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a39cbdc94---viwez.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8f4e03f86---4428805603.pdfIn PDF document text
    • http://willettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/50608588388.pdfIn PDF document text
    • http://sergey-yushkov.com/pict/file/soxozebopedubasiroleruk.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a90f54d09da---33485025399.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/51f0e922d244df2af48e7841a0ee191e/fuwosaxevisudagod.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=uu+nomor+35+tahun+2014+tentang+perlindungan+anak+pdfPDF 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_off00010c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C42 11652 bytes
SHA-256: c55cd6008ec82f9fdd0345a539bcda3a1dc8004c6963fac9de720057142b4d2d
font_01_sfnt_off000127aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127AA 17252 bytes
SHA-256: c131ecdb51927aa7131c06ef289443a886553332a9c77eda8239a6459f823220
font_02_sfnt_off000154f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154F2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1