Malicious PDF — malware analysis report

Static analysis result for SHA-256 b965924cd2c7b5cd…

MALICIOUS

PDF

120.3 KB Created: 2021-02-25 11:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dfce0b9459c7de08994d9ed08d785302 SHA-1: 38d0eca1473ec872019d9d93eb4af2141581fa89 SHA-256: b965924cd2c7b5cdca5e4edf555f125bf9a4270907310980bdbe947184115c33
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://jottigo.ru/aws?utm_term=what+is+agile+approaches', suggesting a phishing or social engineering lure. The document body, though partially corrupted, contains text related to 'agile approaches', likely a pretext to entice users to click the malicious link.

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://jottigo.ru/aws?utm_term=what+is+agile+approaches PDF link annotation
    • https://cdn.sqhk.co/mogudekusab/Vje0wth/boomerang_soundtrack_tracklist.pdfIn PDF document text
    • https://cdn.sqhk.co/vixuzemabad/dgghdHy/ropodujudabumogifedolipiz.pdfIn PDF document text
    • https://cdn.sqhk.co/jupujezaxa/jhgidTk/e_school_management_system_project_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445333/normal_600db7c156a61.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/fp8ghg7/wusthof_knife_set_reviews.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459937/normal_5fe9259c73370.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/jbsjJhi/little_misfortune_demo.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/96705764694.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/integrated_chinese_level_1_part_1_textbook_3rd_edition_simplified__traditional.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/what_does_a_large_sweet_potato_look_like.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/luborinizu/76596452051.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/81254319528.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_off00019bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19BB5 5208 bytes
SHA-256: 72470f3b787083b29a2c503ef4eb7c3bb5c108b43c7af337aac24f51c22259ab
font_01_sfnt_off0001ad7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD7A 11744 bytes
SHA-256: c5b13248e02a5519923fd8d7145af34d84a0c6dcd9daedc9006e48a5d884d2bc