Malicious PDF — malware analysis report

Static analysis result for SHA-256 434068ca266b475f…

MALICIOUS

PDF

77.8 KB Created: 2021-06-12 09:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bb4f4a923a18a7b18e7d089bf5f0056 SHA-1: bd17319f8555962bfe06a03d555d09b104df80b2 SHA-256: 434068ca266b475ffa4854e79eb52bb08b672d6d58f654956528e4ae4cd88111
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though heavily obfuscated, suggests a lure related to the settlement of America. The primary IOC is a URL that was likely intended to host or redirect to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://pixomot.ru/pbw?utm_term=principales+teorias+del+poblamiento+de+america
    • https://cdn-cms.f-static.net/uploads/4376601/normal_604d17d65bb07.pdf
    • https://cdn-cms.f-static.net/uploads/4368767/normal_602b8cda3d6c9.pdf
    • https://cdn-cms.f-static.net/uploads/4377120/normal_603b3e67870eb.pdf
    • https://static.s123-cdn-static-d.com/uploads/4393486/normal_60b1cde264f1c.pdf
    • https://cdn-cms.f-static.net/uploads/4446649/normal_602721fa7471a.pdf
    • https://cdn-cms.f-static.net/uploads/4476569/normal_604875faaf2d6.pdf
    • https://cdn-cms.f-static.net/uploads/4474445/normal_601521dbc652c.pdf
    • https://cdn-cms.f-static.net/uploads/4408987/normal_604177939745e.pdf
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5fd8b54e0eb1f.pdf
    • https://cdn-cms.f-static.net/uploads/4413011/normal_606ae4b5ce5cf.pdf
    • https://static.s123-cdn-static.com/uploads/4393358/normal_5ff1075cd1921.pdf
    • https://cdn-cms.f-static.net/uploads/4485828/normal_602fdcdcc69c6.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pamotekegopa.pbworks.com/f/gatupudoxirekifipazoribep.pdf
    • http://kufujibumufa.pbworks.com/w/file/fetch/144412488/que_es_el_lider_autocrtico.pdf
    • http://baxikufop.pbworks.com/w/file/fetch/144886155/prefer_would_rather_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/d25afa84-d6a4-4288-9e85-7545f855f47e/ladoduduwodoliwoliron.pdf
    • http://zivovot.pbworks.com/w/file/fetch/144674793/revelusimoxanojitusipol.pdf
    • http://nusometa.pbworks.com/f/xajalenuferiwapikoz.pdf
    • https://uploads.strikinglycdn.com/files/81642ffa-661b-4207-a0bb-1d0f66af0b35/julius_evola_magic.pdf
    • https://uploads.strikinglycdn.com/files/e0147f8a-5453-4848-87f1-c7bfbce780f1/73547706205.pdf
    • http://bemulopawed.pbworks.com/w/file/fetch/145004013/short_summary_of_the_veldt.pdf
    • https://uploads.strikinglycdn.com/files/8d647b38-d032-427f-8186-49f72345e9ad/gipulikoratusepawuka.pdf
    • http://gufabewa.pbworks.com/w/file/fetch/145087422/modal_verbs_exercises_elementary.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7d8.bin
1128cad6eef83906498d3e26cec74ebb9fc550eff7a3709262860644c1581824		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D8 1644 bytes
font_01_sfnt_off0000f022.bin
cfadd33dcd94169f1eaa0164753514c67e9845bfb125d0b2d1555d3852ec4375		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF022 5360 bytes
font_02_sfnt_off0001023a.bin
e119d727e12d26208ba7dbf5259512452e10459b5f979e9fbee81cd67644f290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1023A 11396 bytes

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