Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36920b672234db8…

MALICIOUS

PDF

89.5 KB Created: 2021-03-16 19:27:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6b349a56e4be6dbe3f7296052c41fc25 SHA-1: 59fa034e681c206abd12b057c675143ece769099 SHA-256: f36920b672234db892cec173447ee68802c7b9c1e80cbbf4bf3b0f9fa52c1056
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 0.9983

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://golowaki.ru/strik?utm_term=craigslist.org+dayton+ohio PDF link annotation
    • http://tulavesew.getenjoyment.net/wasepafilisijegusijojoga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496826/normal_5fcabdb436b33.pdfIn PDF document text
    • https://cdn.sqhk.co/guzikiku/jaViigd/74062658725.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/ojcuJbz/nabalusus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_60241e29603d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388038/normal_603bb751a57da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_602e2a4daf8a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485165/normal_5fec7bad0c6a8.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/eNdicHB/learn_english_by_stories_audiobooks_for_beginner.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483354/normal_60459ceb0a864.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413456/normal_5fc70d7a16e6e.pdfIn PDF document text
    • https://cdn.sqhk.co/kezomerameki/gchhggp/damamasutemusisamunoje.pdfIn PDF document text
    • https://cdn.sqhk.co/fimirexuf/idictge/ghost_files_the_face_of_guilt_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/gfqlSjg/pixel_art_kawaii_comic_color_by_numbers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445106/normal_6042d96d1886c.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/ha8gdnA/reigns_her_majesty_wiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450733/normal_5fe333f1b0dc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484093/normal_6028155dbc54c.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/legipalofi/twilight_saga_eclipse_download_in_hindi_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/lutomowukuxutu.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/survival_hunter_dps_rotation.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/what_is_the_theme_of_chapter_11_in_lord_of_the_flies.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/30001177848.pdfIn PDF document text
    • http://nifusotajezunur.atwebpages.com/jaloroliriligixexa.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66A 6744 bytes
SHA-256: ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425
font_01_sfnt_off00010752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10752 5128 bytes
SHA-256: 6ec7d5b4b4b3c67f445722120b9bd4d4755768894c07bc57fa572f599dc24c0d
font_02_sfnt_off000118b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B9 11976 bytes
SHA-256: 42680d526af395cc6749627b443c94a992f7683809cc2c9afb15b6a2d44e49db
font_03_sfnt_off000141b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141B9 16036 bytes
SHA-256: 149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1

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