Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c606ba0cc2f5852…

MALICIOUS

PDF

78.1 KB Created: 2021-05-24 17:00:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 52e8aaa14d680ea28d93f2e459033b75 SHA-1: 955422019965c3ec4ce215da3a222e2a3fee1989 SHA-256: 8c606ba0cc2f585225f9d24979df92823e74c210cd393adb8e4bec38f9ca47ed
136 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is malicious and a phishing lure, specifically mentioning a password-protected archive handoff. The embedded URL `https://resalured.ru/strik?utm_term=photo+video+maker+with+song+app+free+download+for+pc` is likely part of the lure to trick the user into downloading a payload. ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/strik?utm_term=photo+video+maker+with+song+app+free+download+for+pc PDF link annotation
    • https://zitidatuviwe.weebly.com/uploads/1/3/4/4/134493200/xonixajajeja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457561/normal_600264cdc4151.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449789/normal_605c846d6113b.pdfIn PDF document text
    • https://zabebopid.weebly.com/uploads/1/3/4/5/134585494/5069378.pdfIn PDF document text
    • https://jisiresofuwidi.weebly.com/uploads/1/3/0/7/130739297/1600948.pdfIn PDF document text
    • https://rojisubul.weebly.com/uploads/1/3/4/5/134593633/13db5762e17a08.pdfIn PDF document text
    • https://burufazifefep.weebly.com/uploads/1/3/4/5/134584298/sulitewos.pdfIn PDF document text
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/1e59e7261de79b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465543/normal_6012dc58673ab.pdfIn PDF document text
    • https://buxipowuno.weebly.com/uploads/1/3/4/3/134353207/malorerigibagev_dikoroxefa.pdfIn PDF document text
    • https://wasaxedunup.weebly.com/uploads/1/3/1/4/131453111/7851998.pdfIn PDF document text
    • https://gebezemimubitup.weebly.com/uploads/1/3/1/0/131070169/mawubakozupajurolori.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
    • https://s3.amazonaws.com/muvemasoxaji/44313154635.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/12350539028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b13104-0c53-45f5-80f1-4471e02ae146/texavunenidiwimebop.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/20901192365.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/33604219107.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b39e0be-eb26-447c-9668-89f0d1ddc9f4/emergency_kit_items_and_their_uses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd69a4cb-7e39-4de7-ac6a-541027c6f7d6/fusonilawudenanow.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/estenosis_acueducto_de_silvio.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/fluke_5500a_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0b09fe4-2255-4a99-9899-57e4feecfd19/how_to_fix_my_ryobi_battery_charger.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/4643823484.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_off0000e605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE605 5576 bytes
SHA-256: ac7ab189e5e5e4e0634d52343ea0218813a14a901259f13a6d66779e339a1aa6
font_01_sfnt_off0000f8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E6 10348 bytes
SHA-256: 7be9bbee94c409bcaf25ebe066feb33c53323e0b943c64fdc1631fe08c094886
font_02_sfnt_off00011c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C68 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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