Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bff17e4af817f57…

MALICIOUS

PDF

74.9 KB Created: 2021-03-06 05:49:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 39db7041863b4a2d1d18b6fb66c28166 SHA-1: 457a535c619cd05b97972067e91320c7cf49ccf6 SHA-256: 5bff17e4af817f579defcfd49a4feb484f4248bfdb1169a2d7b0fdf93082d9e0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a domain that appears to be part of a phishing or malware distribution campaign, as indicated by the ClamAV detection and ML classifier. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to 'Magic mouse 2 apple support'. The presence of embedded URLs and the overall detection by multiple security tools strongly suggest a malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=magic+mouse+2+apple+support PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372378/normal_602432a57ba9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5fd6836b43c2a.pdfIn PDF document text
    • https://givozerav.weebly.com/uploads/1/3/2/7/132710596/931d5d7a364.pdfIn PDF document text
    • https://cdn.sqhk.co/famagafe/r1ujhmh/38601749180.pdfIn PDF document text
    • https://nogusuxewi.weebly.com/uploads/1/3/1/4/131438155/460f9be60e95b7.pdfIn PDF document text
    • https://cdn.sqhk.co/lokijuzim/3jajg0C/nail_salon_in_the_mall_hours.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387412/normal_5fca86d76fcb2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/file_manager_app.pdfIn PDF document text
    • https://8767aa75-4bd5-48c0-94ca-24e983238001.filesusr.com/ugd/debdc1_df31bae5d09a40f39c202945ce664543.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/071a7c74-8e12-41d9-a425-4a93f6636255/varodutilobavet.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/google_sheet_script_rest_api.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/gelofasomufakotupebavodi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceabee14-a0f7-4fd1-8a50-b7d3e25e5950/20974588554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44771a3f-d38d-4d02-9be6-60adba7905b6/ge_electric_dryer_timer_wiring_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/conjugacion_del_verbo_etre_en_forma_negativa.pdfIn PDF document text
    • https://dc273c12-e125-4738-b2e6-b96bc4bd5eb7.filesusr.com/ugd/c8df25_ebd02b9d42f940608457628f0abe647b.pdf?index=trueIn 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_off0000e7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CD 5388 bytes
SHA-256: dc89f2eb98c8eb6d945b4b96ca7c9b95d7afec36c9fd17feac8e24b8557afe9d
font_01_sfnt_off0000fa21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA21 10624 bytes
SHA-256: c48e9bebfe7af5bae0c9b8a5bd3dcd9247b99239759a68ed2f274284205e1d0c

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