Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e70a0831d2359b…

MALICIOUS

PDF

86.3 KB Created: 2021-04-01 23:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ac94941387dde63f103565fef90044e7 SHA-1: b650fc1cd3092058a140d78db8d70bcbe4d479fe SHA-256: f8e70a0831d2359b762c800adda0d898397952ca26e028cd9b194e1a951817e1
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 0.9994

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://ponafet.ru/123?utm_term=google+sheets+string+concatenation PDF link annotation
    • http://jorowijedo.mywebcommunity.org/15198131474.pdfIn PDF document text
    • http://tazasimeli.22web.org/16258505711.pdfIn PDF document text
    • https://cdn.sqhk.co/bijilixiger/cagdNgf/55373634681.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/gfjifhi/super_smash_bros_clash_rom_download.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/ijSi3ia/84745537098.pdfIn PDF document text
    • https://cdn.sqhk.co/nezotelo/dgcsphe/28522863606.pdfIn PDF document text
    • http://sunazuwu.iblogger.org/basic_civil_engineering_interview_questions_and_answers.pdfIn PDF document text
    • http://lugabev.mygamesonline.org/tesomasapitonajugi.pdfIn PDF document text
    • https://cdn.sqhk.co/bemaxopig/idjfjfn/playground_ar_stickers_mod_apk.pdfIn PDF document text
    • http://tubudemawaxoki.iblogger.org/xojamekitorabumilewesonub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/watajive/62732310672.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/77627282371.pdfIn PDF document text
    • http://ralemagafi.epizy.com/numinubizukoziwamunanekok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac61e0a9-9e72-4c69-bc1b-d099f64aab41/31311438342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e7992d-75b1-4169-90d4-1a54a1126fe6/17438922477.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/al_di_meola_sheet_music.pdfIn PDF document text
    • http://lafeseg.rf.gd/27222850970.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a29956da-f2d2-47dc-ba6f-b406a1ddeef7/45763280887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dad01c81-cd5c-48c1-bc66-6482434a7fd0/how_to_become_a_certified_veterinary_technician_in_massachusetts.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/ecuador_access_to_information.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/back_of_the_envelope_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/968ce2c4-b0ca-40d7-a7d6-cf3ad8c3fced/how_to_improve_your_skills_in_pubg_mobile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b4e4dff-e57c-4c0c-b0da-9dcf0d7e24bf/philips_tv_code.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_off00011204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11204 5092 bytes
SHA-256: 876bdfd534b2efe166834dafa57de4bfc712d283b011ff1046fec0c543585de7
font_01_sfnt_off00012354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12354 11980 bytes
SHA-256: 9caf8fe945eb80d36f2c47e20f040bb5e6bfb2b2058f202b84f47e574d184120

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