Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c41c6d9b3d01a9b…

MALICIOUS

PDF

65.8 KB Created: 2021-02-23 18:53:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0cf25a714c68ba00537fd6585a89ce67 SHA-1: 7138ab0740369ea031a1aeca849ccfb9029c7c29 SHA-256: 9c41c6d9b3d01a9b72b6e03a2cec9540e8b1629e7442bcfb40a73ae348bf91ec
96 Risk Score

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 0.9998

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://maypoin.ru/123?utm_term=ks2+nets+of+3d+shapes+lesson PDF link annotation
    • https://cdn.sqhk.co/difanemifal/eRIhjZ5/us_advertising_facts.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/j3ji6je/52795048532.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/hjhTygh/xikoluvozuxa.pdfIn PDF document text
    • http://soinjaga.ru/tibatidevv4xxa.pdfIn PDF document text
    • http://lovepositions.info/70825278213i9wpy.pdfIn PDF document text
    • https://cdn.sqhk.co/ramosigobis/ggicvjj/norwegian_cruise_lines_stock_market.pdfIn PDF document text
    • http://arm-watch3.club/photos_de_Nol_de_lEnfant_Jsusifjhh.pdfIn PDF document text
    • http://gaydating.world/hafele_singapore_catalogue286bk.pdfIn PDF document text
    • http://trend-sales.fun/62774754503kl4hm.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/xopugup/99383195912.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/battlestar_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/72971933260.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/75699595768.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/tamasha_movie_moviescounter.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/dubunoximajodusasifopo.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/leribogukapom.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/av_design_reference_manual.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_off0000c3e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E0 5296 bytes
SHA-256: dc2f43d7265364769ccafd9056590a8a7c375eb8d7f6a2c2da88f8ca157307a0
font_01_sfnt_off0000d5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F1 10592 bytes
SHA-256: d5ddd340b4e247286f4b984fdcd221aa512c8586247b296a70db11b9c84b32fb

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