Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e5734bbfc96d2b…

MALICIOUS

PDF

68.2 KB Created: 2021-02-03 13:55:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bbca082315db3289888dee9b2f857ebd SHA-1: f6b1666dbd9b2651dead6daffd9e9fe209540fbc SHA-256: 58e5734bbfc96d2b9a9c6db4eb7788fc3806dc28766ec7a4a68527071efd6e8d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/aws?utm_term=marketing+pdf+books In PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_5fe982a6237c6.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/jh5Qjat/louis_vuitton_mini_speedy_multicolor_black.pdfIn PDF document text
    • http://blablablacar.online/where_is_my_mind_drum_sheet_music3np4t.pdfIn PDF document text
    • http://tesar-krd.ru/1315609373ihni8.pdfIn PDF document text
    • http://dixajadabaw.66ghz.com/butternut_squash_lasagne_sheets_vegetarian_recipe.pdfIn PDF document text
    • http://raifaisentgo.online/edexcel_a_level_maths_pure_year_2_solutionsbjrw0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410002/normal_60052df098feb.pdfIn PDF document text
    • http://dkmz1.club/vasemoxql07u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422909/normal_5fcd026970948.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/BhjDfji/buzzfeed_tasty_chocolate_chip_cookies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501198/normal_5fdc01d313916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390329/normal_600c8db37d841.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/free_flowchart_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/tamil_family_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/technic_launcher_cracked_chip.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_off0000ce7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7C 5384 bytes
SHA-256: 124a96fc0248f8820ade707a010e0b9d1738a95c618401a0b8dbff2311c5c817
font_01_sfnt_off0000e0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E9 10316 bytes
SHA-256: be9ed1294b0592e5599dd30538d645242383e992e33fd12ad584c2428707640a