Malicious PDF — malware analysis report

Static analysis result for SHA-256 9322c16ec951e9f4…

MALICIOUS

PDF

81.8 KB Created: 2021-04-27 18:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e16a957454b4793bbc623ed8d93bd40e SHA-1: 5ffd50ee60d3bede7480676ec8d542351ae50642 SHA-256: 9322c16ec951e9f4aae053e7fdfce2588d367303f6aca949c912a7960f1d95c1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, which is likely used for phishing. The document body is heavily obfuscated, but the presence of the external URI suggests an attempt to lure the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/strik?utm_term=does+word+have+a+newspaper+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482882/normal_6064e0d664d53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425230/normal_5fcc6d9c887ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481275/normal_6006008189555.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468831/normal_5ff7d0b7d5f5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470964/normal_601648e263150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445892/normal_60590afed49a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5fd38feb8af3b.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/c43533af-fa38-40c3-9189-f00b6847df96/gusakipuluk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67595d15-88e2-4ccd-83d2-8f1c5e9bdc1f/subomibarulageseg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/300860f7-0c46-4c22-87dc-9709659a5643/corsair_k95_rgb_platinum_xt_cherry_mx_speed_qwerty.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/924df985-cd63-4cb6-9e05-7ea694265efe/saeco_odea_giro_plus_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/379788f2-95ea-4f72-9458-5b5c584e55c3/kuxomifonabenomuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f60260d-a2dc-4a5b-8a5a-c04f8e516582/how_to_turn_on_char_broil_electric_smoker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e61f73-0d6c-4b4c-9627-318378672189/34132217895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/538d6554-8c82-43ba-9e8c-4557a6943f10/abu_garcia_silver_max_low_profile_baitcast_reel_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0e0d9fc-4819-4464-8117-5bf782c2c065/kajubof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2965911-0874-4867-bc73-cda12cef93c2/viking_appliances_sales_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/184cb4ef-6758-4c1d-bb96-ec73905e0cea/how_to_crochet_socks_with_pictures.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2aaaaee-6a70-4b7f-8355-98ddf5865c4a/buvajekibagebajetipiwobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8af2ecfe-9a15-4692-88c9-e8cc6a52757c/academic_writing_for_graduate_students_essential_tasks_and_skills_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1d0a8a2-7b0c-479d-9b31-92b0cd64f5e8/are_vivid_dreams_a_sign_of_good_sleep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef8a7ce7-62d3-46b9-81b2-360a531ee2b5/nitusizamip.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/text_to_image_translation_gan.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/roselive.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_off000103dd.bin
6ec1f73fd0c3d0f9a30c2d39bae4b4ca30768852ec1189857c103174a39a0990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103DD 5352 bytes
font_01_sfnt_off00011600.bin
4413cfd66fcafa2b3180342a051cb5a5f3ef3122b44d2881c5807c0daaeb9a64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11600 10484 bytes

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