Malicious PDF — malware analysis report

Static analysis result for SHA-256 30100ae1a8fafd7e…

MALICIOUS

PDF

82.5 KB Created: 2021-03-24 14:29:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fe294e0c022f27819ba3bfb225f15d3e SHA-1: 3b3f3cee3894d76fff207da303e4d5bb26007455 SHA-256: 30100ae1a8fafd7e38574aef9848d42751351208fe92fbd73bce9527ae4a0e9b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF containing obfuscated text that appears to be a lure related to astronomical magnitudes. It embeds a suspicious URL, https://seumenha.ru/award?keyword=apparent+and+absolute+magnitude+of+stars+pdf, which is flagged as a potential phishing or malware distribution point. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://seumenha.ru/award?keyword=apparent+and+absolute+magnitude+of+stars+pdf PDF link annotation
    • http://gibelepij.scienceontheweb.net/falujajowabo.pdfIn PDF document text
    • https://cdn.sqhk.co/seseniluvus/jhibMYq/mawib.pdfIn PDF document text
    • https://cdn.sqhk.co/wakewafo/wOijUJ4/furniture_mod_minecraft_1._16._3_forge.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/lexesodupadabubavepur.pdfIn PDF document text
    • https://cdn.sqhk.co/jamenediged/whdjegh/anticoagulantes_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxejelun/jebifXI/38459150687.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxozamikoge/hb5Pjfw/any_video_live_wallpaper_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388432/normal_5ff926a268946.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwexosul/hea96ep/woodkudoku_block_puzzle_99_woodpecker.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383916/normal_602d0cfdbbf96.pdfIn PDF document text
    • https://cdn.sqhk.co/valujoper/hjAhW1Q/stickers_on_iphone_6.pdfIn PDF document text
    • https://cdn.sqhk.co/wabasenenem/iaicjbE/ski_jumpers_training.pdfIn PDF document text
    • https://cdn.sqhk.co/malasexek/FygjWhc/14295853578.pdfIn PDF document text
    • https://cdn.sqhk.co/rixosadiv/hihjjcp/20051777233.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/af6ca03d-71b0-45fb-bc56-167da8ea208c/kekalazuruturejepuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5aac1c01-3e3c-4fac-a888-a7ffb490b586/35622306952.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dbcfe24-1155-4bfd-af4f-9481e16eab9c/how_to_pair_altec_lansing_life_jacket_speaker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07cf219b-9d9b-4ca5-8aac-341bdcd4e9bf/patixisofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99221fea-33f1-44f2-94bc-f381ad780804/what_are_four_types_of_persuasive_claims.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42cbeb69-3cd5-4a43-af88-0088a489b40c/22582372666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a5a9241-abc6-45a2-bd69-d03c7e4543fc/if_two_players_have_2_pairs_who_wins.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7100b1a2-189d-4576-a94e-55f20ed37760/ingersoll_rand_air_compressor_model_t30.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e38a340-ab5f-4fc6-9444-8e036fcd0d3f/6040374797.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_off00010544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10544 5492 bytes
SHA-256: c49450c278414c808d462a8b8cde8cd94a7ba3966f084cb1355d920cd660b4c2
font_01_sfnt_off000117d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D4 10592 bytes
SHA-256: d470c470ad918a76bc75b2f84175eaa5b0b218bed158310159384d5d65ea447e

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