Malicious PDF — malware analysis report

Static analysis result for SHA-256 418382262e6661d8…

MALICIOUS

PDF

87.9 KB Created: 2021-06-26 06:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3d6d177d3c8f489454b8c8bedead59ac SHA-1: 16512342beacf860b69c533ff8d6e4b880e7c341 SHA-256: 418382262e6661d851e3fde2cbac12a587291205c6e9dcc7c1709cbd681edce5
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Harvest Session Tokens T1056.004 Web Browser

The PDF document exhibits characteristics of a credential phishing lure, specifically targeting multi-factor authentication or one-time codes. Heuristics indicate it's designed to harvest credentials or session tokens. The presence of numerous links to potentially compromised WordPress sites and disposable hosting suggests an attempt to distribute malicious content or redirect users to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/cd94022740fad4024a86e071bff0d72b/27440227383.pdf
    • https://hitpoint.tw/userfiles/file/jopinosuxewes.pdf
    • https://hosvagyok.hu/userfiles/file/11856236463.pdf
    • https://roc.mn/uploads/files/jafeve.pdf
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/1097ffc818d2d934b101f05e708c54e5/kujeludo.pdf
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4099324da7---85239353781.pdf
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d1adb325fae---povezenipowatud.pdf
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b091c18b535---93076823629.pdf
    • https://press-centr.com/images/file/letomibiz.pdf
    • http://timeyear-v.com/userfiles/file/21775771618.pdf
    • http://aylincinarli.com/fckfiles/file/jekuluvudux.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/t500th7j2snddqt7nmlrooke81/44222130864.pdf
    • http://royalwedding.jp/images/blog//file/kimapafatofolavatavufodew.pdf
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c49b72dfdbb---xidofamakekodexezeti.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e0e228b8d---fugiba.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160800a80a5ddf---20102635916.pdf
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/20bcedef2fa0008d816b806978cc1065/nirapi.pdf
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/7e278d30b12928ed782bee2cc7dd3de6/95054668526.pdf
    • https://btcauction.vn/hinhanh/file/musela.pdf
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608502b2ca552---zosoxafetetobaxinokisix.pdf
    • https://imagebeaute.fr/userfiles/file/talepinumazirutaxopa.pdf
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e6811e3fb7---73046816144.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+fill+a+form+in+phone
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5d3.bin
0fd1868782373c7a9b0865fbb0e527884d7ff0d17ff5156b239bc7a581df7193
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D3 17208 bytes
font_01_sfnt_off000122e5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x122E5 16792 bytes
font_02_sfnt_off00013afc.bin
a9cf55dd4963914040c5f7d64442c6c2afd15d33530b7a5a32c66cec672dd486
pdf-font-stream PDF embedded font (sfnt) at offset 0x13AFC 10532 bytes