Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f89a6dc93c69001…

MALICIOUS

PDF

84.9 KB Created: 2021-02-15 06:08:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0366e15ade6e0377e64ae25bb76db398 SHA-1: cf401b147b5391b76961f8946deae8ebe689a24b SHA-256: 5f89a6dc93c6900177d3615ac930453c007a769d389ba4d951209fdc9dd5ce08
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'the city of love in french' and the wkhtmltopdf application, suggesting a lure to a potentially malicious link.

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://leonvi.ru/123?utm_term=the+city+of+love+in+french PDF link annotation
    • http://dutilajojav.22web.org/polerakelefanepod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406793/normal_5fe9ffb9e3b77.pdfIn PDF document text
    • https://cdn.sqhk.co/suzeboxiwo/ha4gyRE/femumigeneregizuzutug.pdfIn PDF document text
    • https://cdn.sqhk.co/pobijejok/aibhhji/86578597825.pdfIn PDF document text
    • http://topsale.pro/bard_of_blood_subtitles_freet4s9t.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/id3g0gd/75016757081.pdfIn PDF document text
    • http://copyright-security-ig.com/masinusuburugipuxekeromitbcs7s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451225/normal_6021782a44b09.pdfIn PDF document text
    • https://cdn.sqhk.co/kapokosop/5oijdpQ/pimijefi.pdfIn PDF document text
    • http://arfesopt.com/gibizog3ko.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/jdifDA0/zibulopunuwulujamadata.pdfIn PDF document text
    • http://loxokunetuladi.66ghz.com/bleach_vs_naruto_3._2_ios.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pakefuvusenoz.rf.gd/sadufo.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/very_sad_status_song_video.pdfIn PDF document text
    • http://muvabeso.epizy.com/endless_ocean_blue_world_creature_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/bapebamirut.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/obafemi_awolowo_university_post_jamb_form.pdfIn PDF document text
    • http://megomofa.rf.gd/kopijajatawusedufinum.pdfIn PDF document text
    • http://jodojan.epizy.com/missing_angles_in_a_triangle_worksheet_tes.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/hay_house_radio_app_for_android.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_off000103b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B4 4480 bytes
SHA-256: 5313f4af6e26fde1ed4eb211185cd41e49345cc62c9075e2fe879d2d93790385
font_01_sfnt_off000112de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112DE 11264 bytes
SHA-256: da200d312f3920d013f997f698bf2ae0f5987e37a82ccb76e29cc84acafeac4d
font_02_sfnt_off00013836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13836 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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