Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ef90bbd2b08093…

MALICIOUS

PDF

90.5 KB Created: 2021-06-09 10:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b49b064519d36634a2c0accb10b5315f SHA-1: 45ceee9f1bcf649120b5ce83ee491904a682d689 SHA-256: 86ef90bbd2b080936c3de65948e066407431be1a38ff2b5fdabff8eda0f243a9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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://nomylo.ru/pbw?utm_term=wand+cloak+and+stone PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454289/normal_601433a366a3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419820/normal_6035a1407af2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444882/normal_60b7c282d3486.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452398/normal_604db4d043118.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455198/normal_5fc6683dbb1b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496815/normal_5fda59140952b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469623/normal_5fe47a7446e65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427093/normal_60bbc2d263d85.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/239fce08-3776-4e80-bfe6-ff06c743e9d1/bt_complete_wifi_disc_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/917e9b7d-068e-4f7f-a606-4372c1d1098d/las_cronicas_de_narnia_1_pelicula_completa_en_castellano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e200000b-76ce-4012-8ef1-1d84f92589ea/how_did_hh_holmes_die.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3abf35b2-d5c3-434b-8ec1-0729123adb5a/10645270740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31f18da0-fe63-41a6-b18d-eebe66caa72b/c_interview_questions_and_answers_for_5_experienced.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d389d12f-b833-4da5-8565-545eff87f633/kung_fu_panda_characters_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/997cdaf6-0988-4d7c-9e2c-2ce47713107d/jandy_aquapure_1400_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98cac4e0-9474-4057-9e52-4affe88f3fb5/33452009914.pdfIn PDF document text
    • http://rukutuxeriro.pbworks.com/w/file/fetch/144577902/gerenifufaxifofegiliv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17ec32f9-f7d9-4309-9b90-d23dc8ec3e62/what_is_a_carriage_return_in_java.pdfIn PDF document text
    • http://rujuboxu.pbworks.com/f/tujomejesabav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69e04511-09a8-4a79-b9c2-cc627fb16f69/lg_plasma_tv_32_inch_price_in_nigeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56356a15-b2e5-4e62-8f2f-5ae15427f845/drug_calculations_for_nurses_made_easy_ppt.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11795 3312 bytes
SHA-256: cb5c8c6405a97e289a1d37fd8f3fa0fb9a9e5cd02c3f475be668e5c7f8c23a8c
font_01_sfnt_off00012376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12376 4916 bytes
SHA-256: a212eb18b25a4a791e2717dd0e64ac4d88af7ae9d6dc0b44c3a6f80e843dd167
font_02_sfnt_off0001344e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1344E 12332 bytes
SHA-256: b3cd13c4393aa3760cfabf6a0c236acbdba979e340f1719b0c372cedb39376f7

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