Malicious PDF — malware analysis report

Static analysis result for SHA-256 0672168e0870b7f7…

MALICIOUS

PDF

77.5 KB Created: 2021-05-03 21:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a5b0239d56033f631d54df92760ffd79 SHA-1: adf8888059dd126f95df7f34e478ad1b642c85f0 SHA-256: 0672168e0870b7f772a567695983acb9df8633a72f75f9db62724421601e8eab
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the overall detection suggest the document is designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/strik?utm_term=percy+jackson+sea+of+monsters+movie+synopsis PDF link annotation
    • https://cdn.sqhk.co/tawibonikigo/eCgfmii/lalotosakexobisija.pdfIn PDF document text
    • http://forexgeeks.net/1000_words_examplemq778.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471240/normal_5fcaee563d071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413002/normal_60542d68a6ed8.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/ViicUgg/neo_usd_forecast.pdfIn PDF document text
    • http://supernefritroller.xyz/5191341830079rwy.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/a5446fb7-ef25-4f82-9ce6-bfae13dc0e33/dell_t3500_specs_price_in_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9c493a7-69db-4adb-af27-683091e33905/1734_ib8_wiring_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2c7f43f-2368-4044-9d89-c3427a04b79b/hp_laserjet_4050_driver_windows_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee8c5353-56be-4f3c-ac9c-1df921536170/how_do_you_find_the_molecular_weight_of_water.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/plague_inc_all_unlocked_apk_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/google_play_store_on_samsung_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/30751749411.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/94301747021.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/chammak_challo_video_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47e5884d-4016-41ce-aa3b-a666c7875022/72615191138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7e88894-2bb9-41a5-877f-9bb314796731/the_hunger_game_download_movie.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_off0000e74a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74A 5432 bytes
SHA-256: 56de5a3ce5c4b728d69af3c2b1f46ac37b03630efcf5155b225b1bb0a34e259a
font_01_sfnt_off0000f9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C4 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00010251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10251 11124 bytes
SHA-256: 36a62742bc785504216f7f9d2c57ec646720b2110d3f4f441e85b3abfae2adbd

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