Malicious PDF — malware analysis report

Static analysis result for SHA-256 d451a2f7153490e6…

MALICIOUS

PDF

79.8 KB Created: 2021-04-08 00:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bd7f9d536d72c88c3c556cfb4e03cf27 SHA-1: 8866b2b297155e7cd638b559d702c0ca60f94e3b SHA-256: d451a2f7153490e6ca44dac837d20ae0312a60aef552260a3b4c6374640bc8d8
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 0.9998

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://resalured.ru/wix?keyword=kreg+saw+cutting+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378170/normal_5fcbec2c86882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449768/normal_5fd132546343c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476273/normal_5fe6f46b522fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386597/normal_5febb37ad6866.pdfIn PDF document text
    • http://momentikshop.space/64893329569yjmkw.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/crochet_pattern_for_granny_square_blanket52rds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465396/normal_600149fbdcf59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459477/normal_605a950c4e6de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393044/normal_60220747c84c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443356/normal_5ff3e3c535507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530578/normal_6057174c99208.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/nojemi/times_table_sheet_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/35391512346.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/free_baseball_uniform_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/stratiform_region_of_decaying_convection.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/vishnu_sahasranamam_lyrics_with_meaning_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/historia_del_bioterrorismo.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_off0000f973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF973 5136 bytes
SHA-256: e4d76f18f0474fcd0e9e8f1265c800b6099d0be34ad9f355e4ead2be46ece5b5
font_01_sfnt_off00010b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B15 11564 bytes
SHA-256: 3a801373538eddff629bc25747f1140ea4eb63ae08f42725669364427b6a069c

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