Malicious PDF — malware analysis report

Static analysis result for SHA-256 45e69a89ea4e2e6e…

MALICIOUS

PDF

87.7 KB Created: 2021-06-03 12:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17d19f3c0100d47bba625646d001c112 SHA-1: d000b6fc70c8a2c58ee7680a22e4a504240cf57d SHA-256: 45e69a89ea4e2e6e24a3ad2d82950ab260a80f168266c4e69e16fc68d34a6cb3
196 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is part of an advance-fee scam, presenting itself as a rollover form. It embeds external URIs, including one pointing to a link farm, suggesting an attempt to redirect users to malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://pelibifir.ru/123?utm_term=calpers+voya+rollover+form
    • https://xirixutikudu.weebly.com/uploads/1/3/4/8/134873033/8e46f5a.pdf
    • https://cdn-cms.f-static.net/uploads/4489428/normal_601dc873f188b.pdf
    • https://nabinavupofi.weebly.com/uploads/1/3/5/3/135350319/buwinemovatoviki.pdf
    • https://dewubolisevibe.weebly.com/uploads/1/3/4/3/134318954/6484901.pdf
    • https://static.s123-cdn-static.com/uploads/4424935/normal_60038381e6494.pdf
    • https://ramogowerutamu.weebly.com/uploads/1/3/4/4/134488443/wipaguvorino-sikagepopifemo-bozemotisidil.pdf
    • https://degufulu.weebly.com/uploads/1/3/1/3/131379990/6173006.pdf
    • https://noduxureravit.weebly.com/uploads/1/3/4/7/134743755/tenugabagopodubewoja.pdf
    • https://lotojenamiz.weebly.com/uploads/1/3/1/3/131381761/834440.pdf
    • https://funovupudejo.weebly.com/uploads/1/3/4/4/134473131/wolafixufudapun_bezibafegezu_vogitukivelo_zovuwu.pdf
    • https://jixejuterekafiw.weebly.com/uploads/1/3/4/5/134508928/widezujojanukux-kedexivigufe-potuta-lakamubu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/12584570-fe8a-4a60-a7c7-bc646704fef8/masipotetogolunuresak.pdf
    • https://uploads.strikinglycdn.com/files/97c27b6c-fab8-4287-aa7c-bcc7c5d428df/68459837228.pdf
    • https://uploads.strikinglycdn.com/files/a41f1192-f549-4eb7-b64c-528a83902f0b/gesekoguriwadagowemib.pdf
    • https://uploads.strikinglycdn.com/files/77cea9c0-38b2-4134-9222-99b2d4b8393e/3045604932.pdf
    • http://kefimazusob.pbworks.com/f/vowukigik.pdf
    • http://xojifot.pbworks.com/w/file/fetch/144413610/periodic_table_of_elements_symbols_and_names_quiz.pdf
    • http://pilujibos.pbworks.com/f/90529434868.pdf
    • http://fudejob.pbworks.com/f/ejemplos_de_frases_para_promocionar_un_producto.pdf
    • http://mefijunov.pbworks.com/w/file/fetch/144421194/mpk_mini_editor_download_mac.pdf
    • https://uploads.strikinglycdn.com/files/16450109-95e3-4a61-8955-c667f91ad4d3/quadrilaterals_worksheet_grade_9.pdf
    • 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://scripts.sil.org/OFL
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106d2.bin
2061d68b63719f8bcc43e117a1d596da98e96a4a4f295a81a8f905f674b2cf8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106D2 5116 bytes
font_01_sfnt_off0001182e.bin
7705857a3c6b04bc1ed7fd6e2ee3143567d4a829c1e5615b8646965ea2d7c04c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1182E 11980 bytes
font_02_sfnt_off000140eb.bin
30b0d802bf5f477b237fc0a2ca4715e6bafb57f5634fcb29b840d41baaf80b2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140EB 6064 bytes

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