Malicious PDF — malware analysis report

Static analysis result for SHA-256 04046badd352a548…

MALICIOUS

PDF

85.6 KB Created: 2021-07-16 17:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 1f25e5efe5924672ba23d3c639bc428b SHA-1: 1f6c8e1e43405c3844696d6fe0c23ac34def6909 SHA-256: 04046badd352a5487c7508d343889dea6c68d8316d1275aff735be2b037023ad
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of a phishing lure, indicated by its structure as a link farm pointing to compromised CMS uploads and disposable hosting. While no scripts were directly extracted, the presence of numerous external URIs and the ML classifier's high confidence score suggest malicious intent, likely to redirect users to phishing or malware distribution sites. The ClamAV detection further solidifies its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/1b6bf84a8183309a52a23a88659398d8/bevexamu.pdf In PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3eb9ee810---47772931277.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac21929cec3---jalokebuberuv.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ccb26ab70---gekefajitew.pdfIn PDF document text
    • http://beulahcooleycollection.com/clients/870349/File/ketoma.pdfIn PDF document text
    • http://ligneus.hu/upload/file/4316964258.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/2d8eee999f5f9eee586c225d12505a59/47397878366.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/0ef0ca3a7fd326a7cb203e9c7fb64af1/kitapemevowagozu.pdfIn PDF document text
    • http://asupuro.com/user_data/image//file/86399886895.pdfIn PDF document text
    • https://tpk-m.ru/files/file/xitul.pdfIn PDF document text
    • http://nomorecpapmachine.com/userfiles/files/jilijubozobugokoka.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9404a9c4cd---dusabowo.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160759087b66bd---90476814009.pdfIn PDF document text
    • http://bagumul.com/file_upload/spaw_upload/file/20210513151719.pdfIn PDF document text
    • https://upaspor.com/resimler/files/57984209101.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160939e797a2ff---68157849248.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/69edf388fad03988bcfc9caabe6b5cb2/tolulijamosobudelasi.pdfIn PDF document text
    • http://wksystems.net/HotelEstimator/userfiles/file/tejapejexibevumigu.pdfIn PDF document text
    • https://ventadeterrenosurbanos.com/userfiles/file/90463026549.pdfIn PDF document text
    • http://ozari-ua.com/files/file/68661637254.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160c4cb6225bb7---41862274631.pdfIn PDF document text
    • http://ridendo.cz/files/file/xujabisoritofosigamebes.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160d3336baf2e9---58606923507.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/513aee1efbfbb70028ffed12e818553c/fimalavipexejelonitoju.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/qvq4u6sjuhsmi49rp0f9ds8v8b/27869846349.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=apa+style+7th+edition+examplePDF 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_off0000e724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE724 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF36 18048 bytes
SHA-256: 9eec27775d3c7c8e1dc32f19b611b06e3aea695544fbeb3d180e32068002aac7
font_02_sfnt_off00012eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB8 10804 bytes
SHA-256: a431098748cd954447cadc3d62946542159d37e7a92b9205d26a31b40161d80d