Malicious PDF — malware analysis report

Static analysis result for SHA-256 a668dbebe82e65d7…

MALICIOUS

PDF

81.2 KB Created: 2021-03-29 21:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e429e97927aa25199bea657148a5c4ce SHA-1: c8074a0d833efab0ebd2c62b6a1fb64fd9fc7101 SHA-256: a668dbebe82e65d7463fb0f80ff06dec8b14e2c04b5d821bb0115bda7481690e
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to contain metadata related to the PDF's purported topic and authoring application, suggesting a social engineering pretext to drive users to the malicious URL.

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://botokaw.ru/award?keyword=cancer+de+pancreas+diagnostico+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478133/normal_601b8a5b69d66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480884/normal_5fe642578f2e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412591/normal_5fd7ad2123353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466161/normal_5fcd3a1358a57.pdfIn PDF document text
    • http://mailedflkf.site/top_startups_2020_canadaje2qk.pdfIn PDF document text
    • http://supportcopyright.net/rafumivejncfx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445119/normal_6048c91fdf8e6.pdfIn PDF document text
    • http://characduwe.space/what_happens_in_a_street_cat_named_bobmw83x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416153/normal_60164b91b2710.pdfIn PDF document text
    • http://wonder-ita.space/fiwabagisezinajajivuvusilggyu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480387/normal_601a6d5bde2ca.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/a8a09c46-4df8-4d74-8237-0ad518242da4/41009260954.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18ba1a3a-0f48-4cea-b5ed-d5db65bba8ab/how_much_does_a_chick_fil_a_operator_make_a_year.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06b833cd-e7fd-4ddd-9bb4-18b9771c15ae/3d_face_mask_sewing_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdfa8152-a77c-41ef-89cd-133ef0295075/net_core_interview_questions_for_experienced_professionals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9112b93-4597-441c-bcff-6dca15fc872e/77444675305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3989625a-96d2-4454-946a-ff41609586c0/mesixizaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8b1c7a2-2b45-491c-a5ef-25f959b53c67/what_are_the_different_types_of_research_tools.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/209fa231-8f31-4c45-b5d5-96c8a4c8c297/fifty_shades_of_grey_movie_series_on_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef658911-f1c8-4b57-9300-8256374138ea/xobotuzizuwezegita.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
    • https://medlineplus.gov/spanish/pancreaticcancer.htmlIn 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_off0000fe8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8E 5196 bytes
SHA-256: 43dc7e3f8979b2dec3ca2f1c143fc74a8807a8a257001de79b687b924f78377e
font_01_sfnt_off00011045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11045 11684 bytes
SHA-256: 8776e27253cf5f68cb3e402da99dc725643dd23c1c4a907c3f005aed7c8cf6dd

Open this report in the interactive analyzer, or submit your own file for analysis.