Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e990d0ea0947847…

MALICIOUS

PDF

91.7 KB Created: 2021-06-10 07:51:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3ee0cb884d30e2a3e2657c34654c3dda SHA-1: 16b3d526b9cc1d49d9f1d8537a22de9a6e213665 SHA-256: 2e990d0ea0947847a105777eb46e02c6faf84feca27cad2272106b3152226ce3
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://catamma.ru/pbw?utm_term=common+french+conjugations PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408851/normal_6036a67406d71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487431/normal_5ffdf7f164768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418166/normal_5fd776fec9ae0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426966/normal_60579fd3433aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387814/normal_6015c115efd3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486190/normal_603ac7c9cfdb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373509/normal_5fcc0c5ac3aa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413697/normal_6056fb3736fa3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kugiwetod.pbworks.com/f/kupewu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d88531b-00e1-4103-a8cd-1ddb4b8e5479/lightning_thief_summary_chapter_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c81dcc2b-f373-4245-ba21-34c5ae1ebc66/jupamopuluwunupudidonoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04ed41a9-38d9-44e8-975f-7e959f73feaf/language_disorders_from_infancy_through_adolescence_5th_edition_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c05ec7e6-04ae-4960-b3d5-1cbc1a380293/is_dell_inspiron_1720_compatible_with_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6482551c-fa7b-41cf-b523-a7a7aa542329/1213413764.pdfIn PDF document text
    • http://fokopaviwu.pbworks.com/f/stellar_phoenix_windows_data_recovery_serial_key_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22871fc0-4609-4e94-ba85-3535c438054e/64391744085.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af21d491-1b72-4c9e-84fa-7df75dc6cbde/37541746124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/597992ed-9526-4c79-a1f9-bddf99d8a041/zugejojamurotesolosen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b363ba8a-0f35-488a-ba3d-a945f6147095/one_punch_man_monster_garou_vs_saitama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f9eeda2-4f18-4082-98d8-7eae6ad24ec0/les_miserables_cast_salary.pdfIn PDF document text
    • http://fujiserefi.pbworks.com/f/turkey_breast_recipes_healthy.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF299 3312 bytes
SHA-256: a14950173e5d1d1f1c70576ac3dafa31bb0aa6ece26b8d12516862096ecff79f
font_01_sfnt_off0000fe7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7A 5244 bytes
SHA-256: e940ababb3896ec54aaa6bd3a36530ec6b62763ed23d81196d5e1d8aecd7926e
font_02_sfnt_off0001102a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1102A 12836 bytes
SHA-256: 0eee8335f291d6c3f57bb72de929635f39c6651c710b7e5842e794ce6f980652
font_03_sfnt_off0001397d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1397D 16684 bytes
SHA-256: d2dbedc23249eed12779007d0c58b566766b7d8fb5b0bb1d603b2aa598fde09e
font_04_sfnt_off0001509b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1509B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c