Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd0e80c503a04c0…

MALICIOUS

PDF

75.3 KB Created: 2021-06-26 14:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 2df167429693c102a1ee86e84a0f06da SHA-1: 92e806d6b8cf03d6be79517d9500a031d1366967 SHA-256: 0fd0e80c503a04c08a2b21f4fd17f0558f61c23ac2ce53cc02a9c78244a6ecd6
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS upload directories. These links likely serve as lures for phishing attacks or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d92d3073e7---bawomemijite.pdf In PDF document text
    • https://betalinktech.com/blmedia/file/82300474191.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/494886fdacbfa40abcf75e83d4c3128e/rajarej.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/aimqme9k3ncg2jfkikbv9vkucf/nafenawitu.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160719fa046550---senutofafojesib.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160976bab51532---xasamifugum.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0fbdd1ca1---rurobaratawuzafawo.pdfIn PDF document text
    • http://almar-bus.pl/userfiles/file/nedupegonadojem.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/dd7af3303e1535e13b2b3de1b118e047/jimovupavokilamesegize.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/316d5f10da7f45c8e5d76e0346020dfc/16992718312.pdfIn PDF document text
    • http://arslanemlak.come/file/40744874966.pdfIn PDF document text
    • https://hgb.se/filer/file/92398964813.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/0458d059e096e4537a8e45155d3efd9e/43328737482.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085057997080---bubiwomogajoradagesadobe.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075900d2b080---87469952296.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/90971247490.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16086b361b27c4---tomut.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/ld93c3sc40gql841gn5j39nn4l/95933605962.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b58e84739---malipogapuzekami.pdfIn PDF document text
    • http://bonapartefamilynetwork.com/clients/7/7d/7d081654635712149502d88e72c54c2d/File/pabebagapuvimuso.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/milas.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/b9fcbce08ab3b5a1c151abc1b257296f/xolilutek.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160705acfa95b7---jodusab.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=mixed+naming+compounds+worksheetPDF 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_off0000c25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC25B 16104 bytes
SHA-256: efc418ef0298a3302182aec1d554d0efd267313511e759ed0c7c9e629b63bd1a
font_01_sfnt_off0000ebfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFC 11288 bytes
SHA-256: adaa7ea1a560cd93da0497537491b8dfdf43779b03c7fd3f0dc43dc148ad66b6
font_02_sfnt_off00010633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10633 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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