Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a75fb6be35eb31…

MALICIOUS

PDF

90.2 KB Created: 2021-09-05 20:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: c2db12ade21c06958764728d4ad4bad4 SHA-1: 4d60904666fa9799fd14a347c6e0b268f292e8d6 SHA-256: e2a75fb6be35eb31bdb66de587a5514bf25b40074343414b60332c808b30e539
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 WordPress upload storage, suggesting it's used to host and distribute malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest it's designed to redirect users to malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab947b6d7d8---74593832006.pdf In PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/e9f48e2bb35ac5d5fede0f6e05f1c8b4/23881238112.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e6b2615a4f8---xubiduroxef.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/6391760100.pdfIn PDF document text
    • http://obrienbuilders.com/userfiles/file/90043383076.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607345f3b4c25---laretobudem.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/sebatage.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ad0e49b4737---sasiwol.pdfIn PDF document text
    • http://ekonopuntos.com/campannas/file/83575402884.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160e60df9a73e3---53385656278.pdfIn PDF document text
    • https://open-call.fr/uploaded/files/vaxazigesikob.pdfIn PDF document text
    • http://veterina-hrib.cz/user-uploads/files/12256230183.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160726e8115bef---21262272300.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080baadd7e6c---34414352903.pdfIn PDF document text
    • http://cnp-inc.com/ckupload/files/xalipipokodobuxaxepap.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160e4bf048f643---lufoganovigexerogupefigo.pdfIn PDF document text
    • http://alteredcompta.com/buddha/ckfinder/userfiles/files/5568454607.pdfIn PDF document text
    • https://songhong-thudo.com/img/files/65484402246.pdfIn PDF document text
    • http://meteosputnik.ru/userfiles/file/45665509809.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a527bd7ae60---megulivo.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0340d9606---nukukukofafusirit.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607598023b36a---sagijebebexisovoxik.pdfIn PDF document text
    • https://aaaxxion.info/images/file/11841811529.pdfIn PDF document text
    • https://hawkseyetravels.com/assets/ckfinder/userfiles/files/xekeduvaweroxiv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=hernie+inguinale+scrotal+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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE59 19704 bytes
SHA-256: 39e4586b1a380447caecffe94e27d50a6ecb558a4297eefad9f5f3e937123b0b
font_01_sfnt_off00012122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12122 1888 bytes
SHA-256: 228445a3744f13af4bf84041e55802a923554d86926eb0745489ea117e4ab105
font_02_sfnt_off000129ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EC 10888 bytes
SHA-256: 185e95884ab5896142d0f9f28ff5fe14a057d7f843cdc3c43a542db1259fc06e
font_03_sfnt_off000142ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142FF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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