Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35279d1b3daff92…

MALICIOUS

PDF

75.4 KB Created: 2021-06-09 03:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9d060d4f1d3ed3f9c876bd9074cdf456 SHA-1: 6a3f9c8b21500ee72ecc6fd04870412055717fef SHA-256: e35279d1b3daff92ca95989a0cac0090cd346c676ddae0421c5c8dab0f30a841
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that directs users to a site offering a 'hack apk'. This strongly suggests a phishing or social engineering attack aimed at tricking users into downloading potentially malicious software. The ML classifier and ClamAV detection further confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://crysiq.ru/pbw?utm_term=no+root+esp+hack+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370278/normal_60bf9dc86cabb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418383/normal_604d4055dac59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462374/normal_601cb2a6e59f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482012/normal_5ffb9fc8d54a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393898/normal_6067f4610d8a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492281/normal_60397046cff9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449600/normal_602b2d334ce85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404313/normal_5ff832682b638.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383679/normal_5ffa291681b6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421937/normal_60be6d56f3dcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486969/normal_60bff36d2b590.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3b40b99-5d9a-4be0-831b-c3b0029b7c1a/rojurifedexajolufanuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab40c196-4ae4-46ce-8a09-a8ed2fba12bf/beats_solo_hd_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/343f7592-daaa-4b5e-acc5-769a0f19993a/motevujozituf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5aa83b94-22f5-4bf0-b2c1-1fc6ef725c98/38891825916.pdfIn PDF document text
    • http://patimedudemu.pbworks.com/w/file/fetch/144676290/anaconda_3_tamil_dubbed_full_movie_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0536141e-2283-4202-98e6-1f0f16b38a82/binding_of_isaac_four_souls_death_rules.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1faf99cf-acfd-4aaf-b6af-d6737ebe5145/series_of_unfortunate_events_episodes_ranked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49a00edd-b526-408b-a72e-b9a11185f0b6/film_review_writing_frame_ks3.pdfIn PDF document text
    • http://venatulafiz.pbworks.com/w/file/fetch/144425676/novio_por_una_noche_online.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
    • 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_off0000d65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65E 5020 bytes
SHA-256: 4223940a911b2843a7a0a43f3123388ed9f3b33e61e8be08dce517ef7ad7f026
font_01_sfnt_off0000e771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE771 10504 bytes
SHA-256: bdbdb7fd09b7c5f3bd6c3111dd54bdc2c0bbc99e0954bfd436c58b704102226c
font_02_sfnt_off00010bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB5 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2

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