Malicious PDF — malware analysis report

Static analysis result for SHA-256 030acedd9e4c06d5…

MALICIOUS

PDF

72.7 KB Created: 2021-09-08 11:18:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 38ca00accb7dd0c2847f72b215e034e1 SHA-1: 94c9f83a4e6ef294e6470ca60af5c454ce311bf6 SHA-256: 030acedd9e4c06d5dc412460d3d7c763e476e619d69138cb0e8e4f64c276e26a
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting it's designed to redirect users to malicious sites. The presence of multiple unknown URLs further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e25dd83e1---tufajaro.pdf In PDF document text
    • https://cornwallstaffagency.com/userfiles/file/57270691735.pdfIn PDF document text
    • http://vet-arrighicolangelicristilli.eu/userfiles/files/totadokamelazo.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3c86ae636---21816245756.pdfIn PDF document text
    • https://musikkursus.dk/userfiles/file/71507973885.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/62edeb779ee643fa74a82a833ef7ecef/zeritavon.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/fdaa1122e930b94803db92eb03ad5e2f/20122352953.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16110f2437befd---38915684604.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16086106c483b7---doxupeveniker.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091688a9b508---61388717313.pdfIn PDF document text
    • http://thesnowmanicecream.com/ckfinder/userfiles/files/99431922897.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/87737758423.pdfIn PDF document text
    • https://msiutilities.net/documents/penawezixefapezalanodi.pdfIn PDF document text
    • http://bizbecho.com/pa/trainstation/uploads/image/file/58018590609.pdfIn PDF document text
    • https://riondene.ch/img/uploads/file/fupasavizugid.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/74427156284.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1ec3f3bfd---61354371470.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/9363520917.pdfIn PDF document text
    • https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/00c55abccd262aa215e6a6f13d38d93c/94645557154.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a217cb97cb2---sivef.pdfIn PDF document text
    • http://hani-bee.com/userfiles/files/19535330076.pdfIn PDF document text
    • https://caribemed.com/userfiles/file/dubevidabo.pdfIn PDF document text
    • http://volamtuyetthe.com/userfiles/file/kekebar.pdfIn PDF document text
    • http://henghuitong.com/jingkelun/userfiles/files/20210720083019.pdfIn PDF document text
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608522b2d7bb4---78064707776.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=bodybuilding+program+at+home+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_off0000b9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E6 11184 bytes
SHA-256: 14c603858d114b1b5d8f78b5cfb6a9b2218aaa7ccd4ade3eb585f533d4ad2f3c
font_01_sfnt_off0000d371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD371 16520 bytes
SHA-256: bc4c29b307c781991c67d37ce30011e17722ab6bb075758021d01e7bc6f6f83a
font_02_sfnt_off0000fd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD17 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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