Malicious PDF — malware analysis report

Static analysis result for SHA-256 945e66faf97cf037…

MALICIOUS

PDF

165.8 KB Created: 2021-05-09 20:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: d847c730c336a0f517ff873f4083dcd8 SHA-1: 66bd97c449bfcf5493ded59230635a9e9ba32b38 SHA-256: 945e66faf97cf037f46acbf6ac065702b914e569c5fd14fb325940779a0e0e1f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to economic growth, suggesting a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/strik?utm_term=is+the+japanese+economy+growing PDF link annotation
    • http://tk-pobeda.site/lesson_12_divide_whole_numbers_answer_keyx6fga.pdfIn PDF document text
    • http://gepokupaburorew.mywebcommunity.org/how_to_identify_storm_clouds.pdfIn PDF document text
    • http://sparzha.club/grohe_ladylux_cafe_parts_canadas0uw4.pdfIn PDF document text
    • http://kamini33.ru/how_to_put_photos_on_ipod_nano_6th_generationvpfzn.pdfIn PDF document text
    • http://viwafuxofiseko.getenjoyment.net/antrenmanlarla_geometri_2._kitap.pdfIn PDF document text
    • http://lyudi23.ru/international_business_negotiation7y6nz.pdfIn PDF document text
    • https://bakigimos.weebly.com/uploads/1/3/4/3/134322269/luloxagefofa.pdfIn PDF document text
    • https://sikevitexin.weebly.com/uploads/1/3/5/3/135301450/3173364.pdfIn PDF document text
    • http://dodemul.mygamesonline.org/zupapuditaba.pdfIn PDF document text
    • http://dithetsen.xyz/mozusigukotudekyswc8.pdfIn PDF document text
    • http://xomutukegadoj.mypressonline.com/campbell_biology_in_focus_ap_2nd_edition.pdfIn PDF document text
    • https://muxiduxipa.weebly.com/uploads/1/3/5/3/135319221/pozidinafewalob.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/tutapaxi/16444904396.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/bajudepim.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/ashton_sanders_meets_denzel_washington.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/adrin_pradhan_all_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/zixewinefevelidimapile.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/first_grade_language_arts_printable_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/a_street_cat_named_bob_movie_free_online.pdfIn PDF document text
    • http://samesesodore.onlinewebshop.net/zuworewadidaxojeluvovew.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001feb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FEB9 24372 bytes
SHA-256: f0c2656566840755a3f3acacba4b1b5972e1095881a724496cc741b4e530976f
font_01_sfnt_off00024ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24CE7 5520 bytes
SHA-256: 9749ab51ed507be0ddc0c273fc5fe4180c515fff285677a659d7e1298c0552ca
font_02_sfnt_off00025fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25FA2 12704 bytes
SHA-256: 89e235275dbc6d5711715c58014fe24d0f89d4cc5d430bfb4e1577eed8badd03

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