Malicious PDF — malware analysis report

Static analysis result for SHA-256 465b793fdb82e78e…

MALICIOUS

PDF

96.4 KB Created: 2021-03-15 01:27:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0346167c514bcf559558851db13e649a SHA-1: 888b12ad15405bb9f0bc079d0e031f36ed709868 SHA-256: 465b793fdb82e78ebb807fb17cb8e92341f0f73f803708ca4b1855c2c25f206b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to 'https://bologen.ru/wix?keyword=german+coast+uprising', which is the primary indicator of a phishing or malware distribution attempt. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing or credential harvesting attack.

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/wix?keyword=german+coast+uprising PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452400/normal_6039592875d6a.pdfIn PDF document text
    • https://cdn.sqhk.co/viforoge/hhiijgh/promo_code_for_walmart_grocery_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/duvetezoje/dicibtZ/78094537582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389353/normal_601f34f3727ad.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/hc6idaY/monster_school_clash_royale_part_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495400/normal_600c39519ebe4.pdfIn PDF document text
    • http://kigowamukidiba.iblogger.org/budget_2019_highlights_in_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/nugizape/hijaiao/the_last_door_switch_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_6030cc0e95928.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jilutuve.rf.gd/android_studio_sharedpreferences_save_arraylist.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/aanandam_malayalam_full_movie_cinemavilla.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/amoled_pro_wallpapers_apk_uptodown.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc2c63c1-362a-4751-a0fc-3de81518f030/2002_polaris_sportsman_400_parts_diagram.pdfIn PDF document text
    • http://nedudumitariz.epizy.com/zuvuleguwipajokezule.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/dukapisilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80fa58c5-3f59-49d1-850a-71c3936d1842/19963068211.pdfIn PDF document text
    • http://lumigetutiburu.epizy.com/jenik.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/how_to_read_lumbar_spine_mri_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/amplifier_full_hd_video_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9ed3705-08ca-40e6-8c34-e98a16f419cd/tezaxazizavujepisusokuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3af3d80-1bc3-4504-a257-09473fd801aa/3277867368.pdfIn PDF document text
    • http://fevenubonanez.rf.gd/original_mark_sheet_of_sol_du_2014.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_off000139e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139E4 5252 bytes
SHA-256: 21be57f32a8ccbbe24ea28a30b360382cbdd52c65e1ab9b6ba86e1839641113b
font_01_sfnt_off00014ba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BA6 12316 bytes
SHA-256: daba12ed1fd6195467b87d1f17eef2e47d36fdb262c0adef8d6de6431bc5d7ec

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