Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca07eeb7e98e86df…

MALICIOUS

PDF

112.8 KB Created: 2021-02-21 06:03:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 14ecabafb42c6805eb27531669579d35 SHA-1: 5786681b0d6f6e0a9d8919eacd3964cd4626b1ab SHA-256: ca07eeb7e98e86df2f6e2a3ec55e58777ff43db6cebca5e9c228a5c87bcb09ac
96 Risk Score

Malware Insights

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

The file is classified as malicious by ML and ClamAV, and contains an embedded external URI pointing to a suspicious domain. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload. The presence of multiple suspicious URLs further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/strik?utm_term=magna+carta+holy+grail+best+songs PDF link annotation
    • http://keepmaxi.space/animaciones_y_transiciones_en_powerr76ku.pdfIn PDF document text
    • http://womenit.space/the_first_law_of_thermodynamics_worksheet_answersopqa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372740/normal_601d6c71ca0a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_60152826ccf53.pdfIn PDF document text
    • http://org-fruit.space/22954612556h9eaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465142/normal_5fe9cb6656ff6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413117/normal_6007c64530247.pdfIn PDF document text
    • http://chaptejvxz.fun/jazefanajexunixozejozumk0hxq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jubiferekaka/autonomous_smart_desk_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/consequences_of_breach_of_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/5665398102.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/vofiwaxerukiwakuxigope.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/project_management_essentials_for_dummies_review.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/lesalorufuresuziludo.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/app_world_for_blackberry_9900.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B63 4756 bytes
SHA-256: 4d3de9b56c42467c22e93b9773332b9ef9b91da5c1d3081b908782b880f0b410
font_01_sfnt_off00016c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C17 5096 bytes
SHA-256: 3d6279121aade12cbde080a1ca02c9ca76f88f9e24b9371dc61fb0f79f5e64f1
font_02_sfnt_off00017d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D5D 12792 bytes
SHA-256: ba110b20534d26d0eeb0e77e227d5d1ef9b4e8cc3a40adf08f943a29f97effcb
font_03_sfnt_off0001a737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A737 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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