Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e83dc7dc2dcae65…

MALICIOUS

PDF

288.6 KB Created: 2021-05-31 17:21:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cc84da708dfa57e67b62fd64d455ed48 SHA-1: 75d54a0a8054004964dbb35e2767ab6558a94035 SHA-256: 7e83dc7dc2dcae65a0bfccb17c41c7a342379293d5105c3fa8d814865b6cf692
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 0.9926

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://resalured.ru/123?utm_term=bhakti+ringtone+free++2018 PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4447097/normal_60b1df7128431.pdfIn PDF document text
    • https://wegonugu.weebly.com/uploads/1/3/4/0/134040733/2d46de6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421199/normal_5ff9eb27c03b2.pdfIn PDF document text
    • https://geroguvipem.weebly.com/uploads/1/3/4/4/134465684/cb622df.pdfIn PDF document text
    • https://gewafikawesi.weebly.com/uploads/1/3/4/0/134016732/nodopum-nopipa-detumekekufufef.pdfIn PDF document text
    • https://fitovaturi.weebly.com/uploads/1/3/4/3/134371738/puzobamigisakodinof.pdfIn PDF document text
    • https://vejuxafesopekub.weebly.com/uploads/1/3/6/0/136010302/vubobeleruvu-fadira-gifuse-wotin.pdfIn PDF document text
    • https://lotozuxefad.weebly.com/uploads/1/3/4/3/134316708/f211c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_6052ca5a16844.pdfIn PDF document text
    • https://mewofotas.weebly.com/uploads/1/3/4/5/134524455/zirudumojizaju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390684/normal_60074ddad1abb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388060/normal_5fd3b3943b5a4.pdfIn PDF document text
    • https://jokilexagazoxo.weebly.com/uploads/1/3/4/6/134602179/luvejadotinaredova.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/8c1ea992-fecf-49bf-9622-12e16c8bb54a/how_to_replace_the_water_filter_in_my_keurig_2.0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57098cb7-0cc6-4470-9c95-46d3000bdc00/55997622135.pdfIn PDF document text
    • http://lakebimutep.pbworks.com/f/65413323596.pdfIn PDF document text
    • http://kolasotosexu.pbworks.com/f/the_tenth_insight_audiobook.pdfIn PDF document text
    • http://funinupun.pbworks.com/w/file/fetch/144412035/headway_pre-intermediate._workbook_with_key_5th_edition.pdf.pdfIn PDF document text
    • http://xetibubib.pbworks.com/w/file/fetch/144411810/astrologa_y_numerologia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/327b3fb4-3139-405d-89aa-c75fd0e4f9a5/bose_wave_music_system_iii_with_multi-cd_changer_-_platinum_white.pdfIn PDF document text
    • http://zegugas.pbworks.com/w/file/fetch/144411456/10109408561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3805bb1-f846-4a34-a39e-1c39c9f8e052/solozojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e5f4d34-794d-4660-bf93-703adc3de036/how_to_reset_a_galaxy_tab_3_to_factory_settings.pdfIn PDF document text
    • http://lipadune.pbworks.com/w/file/fetch/144414588/framaroot_apk_download_for_android_5.1.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00043d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43D37 5452 bytes
SHA-256: 7ab43f594928c73f4fb74b132484ddbfefc4d74b502236b173f9b8768e027a6b
font_01_sfnt_off00044fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44FC6 11200 bytes
SHA-256: ae35109159d172e0bd14298e07528cfc27d2237548fa57ad2472de2dd5bf263e

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