Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b3c20b93234b1e…

MALICIOUS

PDF

75.2 KB Created: 2021-02-04 00:33:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 01106588b7296b674ee211f4ce5e17b5 SHA-1: ea19b55ad189a0fe9596908d9544e35a3abe31c8 SHA-256: 45b3c20b93234b1e446e42bb2f49e23ae6465e9c5647e9a3f722025344cd564e
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the embedded URL is the primary indicator of compromise and likely leads to a phishing page or a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/aws?utm_term=iphone+7+camera+app In PDF document text
    • https://static.s123-cdn-static.com/uploads/4418973/normal_5fca6b3732ed5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446638/normal_5fe233dd4e718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487631/normal_5fdc8192561c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_600d8214c352b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_5fe91063e1ad7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389108/normal_5fc80c2acd146.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370294/normal_5fccf32e5bc9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488135/normal_60104916aa155.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413112/normal_5feaf9c0eb5fb.pdfIn PDF document text
    • http://debakabuxaw.22web.org/white_background_pic.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://novademovu.rf.gd/3968335056.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/mapa_de_areas_protegidas_de_guatemala.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/6385950867.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/boyce_avenue_cover_sessions_vol_1.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/bairavaa_songs_free_in_starmusiq.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/zamawoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/cofunction_identity_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/ipcc_1._5_report_upsc.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/bakri_eid_india_2019_images.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/vezelemupowowumokug.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/59515431391.pdfIn PDF document text
    • http://padijajuvon.rf.gd/94262687413.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/balapam_patti_bhama_odilo_old_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/96287853151.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/28314270643.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB41 4980 bytes
SHA-256: 3af9495f4fbef5f4a75d183fe2517c89861cb2453e65833661877a441565df49
font_01_sfnt_off0000fc0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0C 10404 bytes
SHA-256: a7b2b679f6fe3eb3bd9d473138badd887d0f0797ba6fc11589ac63733ce491ac

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