Malicious PDF — malware analysis report

Static analysis result for SHA-256 7024d902eb1c7a7b…

MALICIOUS

PDF

73.3 KB Created: 2021-02-15 11:10:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a6bd1484954d7398c2f2f148bf1846e4 SHA-1: a74d684baeef07078d1c141dae2edba928e49cf4 SHA-256: 7024d902eb1c7a7bc37c70ad540887d076974571beaeada40f411435cac9cc99
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'baarspo.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a 'worksheet' theme, aligning with common social engineering lures. No scripts were extracted, but the presence of external URIs indicates a potential download or redirection to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=dark+ages+worksheet+pdf PDF link annotation
    • http://pelistens.xyz/27813217437awjkz.pdfIn PDF document text
    • https://cdn.sqhk.co/vomikigiw/iEoCiad/us_box_office_2020_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/fofanibiv/ijFib0O/30617705459.pdfIn PDF document text
    • http://tlgfree.xyz/sabufukeloxanuvubejixins3pnt.pdfIn PDF document text
    • http://3bureaureport.info/blockman_go_mod_apk_unlimited_allg2m4u.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/ZPLgi10/tennessee_titans_current_score.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuzavaxevarap.epizy.com/96875396256.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/79628248375.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/cnc_drilling_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/5006123803.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/bink_s_sake_violin_sheet_music.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_off0000e2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C9 5428 bytes
SHA-256: 25c124db33b54bcaa588e176e992b74610f5b8821f8bdb186eb5947a1d53f848
font_01_sfnt_off0000f559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF559 10424 bytes
SHA-256: eed65e1caaed3d41178677b8fe8acce1e3b16ef84955fa28ef1b4e4f09d190cb

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