Malicious PDF — malware analysis report

Static analysis result for SHA-256 db9c65708e5de661…

MALICIOUS

PDF

93.1 KB Created: 2021-03-10 11:17:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a5f51a16041e2c566da312d2d4ca060a SHA-1: 218cb348e6f6f755291c74ea5804628c41515ed5 SHA-256: db9c65708e5de661f3dbf8e34d35b7a6d8804abe865873e4681745c4d517ba6d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though heavily obfuscated, appears to reference a beauty product, suggesting a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://maypoin.ru/123?utm_term=makgeolli+brightening+mask+sheet+%25E0%25B8%25A3%25E0%25B8%25B5%25E0%25B8%25A7%25E0%25B8%25B4%25E0%25B8%25A7 PDF link annotation
    • https://cdn.sqhk.co/dapubebireba/iaeijxQ/41712375539.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxifopu/AOvjfhd/brain_stress_balls.pdfIn PDF document text
    • http://fupemagis.mywebcommunity.org/78941685291.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxaguzifep/idDLifg/horror_movie_quiz_kahoot.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvapipitol/dgijelN/suzuki_boulevard_c90_service_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/xijodepub/ahbEsxB/vubomurezimemidizer.pdfIn PDF document text
    • https://cdn.sqhk.co/biluvetizom/iiGjahi/15796974840.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/CidNU3e/cat_goes_fishing_2_apk_hile.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6a48ffd-bfb3-4369-9cd4-84aad1f5d374/how_do_i_change_the_aspect_ratio_on_my_philips_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/97371405143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/496ddd77-2eee-42c7-89cf-0a69a2f3af11/14667175457.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e2d22db-bb58-42ef-b8d6-29c01146ec8c/how_to_trade_earnings_gaps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9608593e-f30a-4524-8c7d-6c79954edca6/xapibipobalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/925cd3d9-2a20-4440-839f-dae1baa2e741/love_poems_for_wife_from_the_heart.pdfIn PDF document text
    • http://nakeviw.myartsonline.com/bovumofasixuxutikuta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29d6a0e2-cf80-49fa-b007-caa83cb79208/vuzimetulu.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/abstract_art_background_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20104162-0948-4082-be73-890bd94861d0/49306866960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c09553c-558f-4bfd-932a-cebeb3d1a0ed/man_upon_the_hill_lyrics_meaning.pdfIn PDF document text
    • http://seroroxunabolu.onlinewebshop.net/95411837049.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/043831f5-450e-4559-b588-0a7288cd76a9/seven_laws_of_success_herbert_armstrong.pdfIn PDF document text
    • http://toxifiv.myartsonline.com/41677711399.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF115 3040 bytes
SHA-256: fad32b261f1867f6bb862c1b2f4570a0ce4bb26fbf2e31a5d92ad4a34f083a78
font_01_sfnt_off0000fbf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF2 5308 bytes
SHA-256: 2b3b86ea98e65ed286a3cd21f24ba729697bbfc1eeb32bd123647c326af78ba0
font_02_sfnt_off00010ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDB 6280 bytes
SHA-256: 231b1b8ed95992f724824191b1128cd87bc8f0ae91ca89720f9cf450d9ae1e29
font_03_sfnt_off00011e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E21 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_04_sfnt_off000126ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126AE 11232 bytes
SHA-256: 82f622223cb6907f95458c056019b0a7e5cac0393dcdde66e71dbb7558349ce9
font_05_sfnt_off00014d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D6F 16220 bytes
SHA-256: 33e83612fb73c9e3a90edc7d5f32dac100fbccc031014dd2bd77b788ba144f1a