Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b008bb26e17675…

MALICIOUS

PDF

89.7 KB Created: 2021-06-13 16:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3dad7bd025d29cc1289fc5de58687312 SHA-1: c8aa659196fbc53181a23d399d685dce7264da3a SHA-256: 62b008bb26e176751476eb988aa270db737893aff8adb69d1ff6866a4aef32d0
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous external links, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL findings are sufficient to infer a malicious link distribution pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://philabc.ru/uplcv?utm_term=krishna+flute+music+for+positive+energy+mp3 PDF link annotation
    • https://cplastik.cz/data/cms/file/rewugikoponabila.pdfIn PDF document text
    • http://alexandraharris.com/clients/36054/File/59669269872.pdfIn PDF document text
    • http://centralgiving.com/media/userfiles/file/45273453002.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a165c175d---24872481088.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/4c88110d39f87401cdafc919460f9f4b/wiwoxododomuwod.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160985acaa528f---fiwedafizurabufoxof.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160861144dd791---nakakadimufune.pdfIn PDF document text
    • http://dichvugiayphep.net/hinhanh_fckeditor/file/mipuzizukilawopagaxes.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16073f6223d5d2---jumufudidilewi.pdfIn PDF document text
    • http://lhs60to70.com/clients/3/32/32806278e47d7e4d905c37b1d6ebf04a/File/25085343928.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/90407503256.pdfIn PDF document text
    • https://memoservicesrl.it/file/saketinotapibejoxarap.pdfIn PDF document text
    • https://peilimineko.com/userfiles/file/xabome.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2ED 5608 bytes
SHA-256: 2fbd2aecdf1e12d2d18026b0650d8855c59af3e32b463e47c12737ad3bd481d0
font_01_sfnt_off0000f5e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E8 4376 bytes
SHA-256: 1ee8f7860d22e9e08acbb176389d377ef7caba2998867917a68433dd6859c16b
font_02_sfnt_off0001061a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1061A 2444 bytes
SHA-256: 45b3279a2b1eeaf4c52d88ae1eec29206221e1be571e63613e9687755652acb0
font_03_sfnt_off000110ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EE 11536 bytes
SHA-256: dc1f8ced246aec0dc68245387f9afa734bd9d0660550b9113d42890099190c5e
font_04_sfnt_off0001386d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1386D 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
font_05_sfnt_off0001466d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1466D 4672 bytes
SHA-256: 47764d0f7bf28fe7d4f14f6f6bbffd4dc183fe2822d812ab470abea8c9b3fca8

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