Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1efe0eda25d5a8c…

MALICIOUS

PDF

151.1 KB Created: 2021-03-16 18:15:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: c49e71259e72638c6679a68cb075fe99 SHA-1: f34f5c01850f1e27ed931e79bcd8a394e1a74fe9 SHA-256: e1efe0eda25d5a8c39fcf3b1c0d8e51f114ee55590150e4a9274a899df9de38e
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains text related to 'Dbz apk games list', suggesting a lure to attract users interested in such content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • 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.
  • 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://seumenha.ru/wix?keyword=dbz+apk+games+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417049/normal_603696d6cbb2d.pdfIn PDF document text
    • https://zopojezumaze.weebly.com/uploads/1/3/1/6/131637354/gagafe.pdfIn PDF document text
    • https://xinomufe.weebly.com/uploads/1/3/4/7/134706409/8830873.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447079/normal_5fe179bfe34ba.pdfIn PDF document text
    • https://mogewojelepa.weebly.com/uploads/1/3/4/6/134681452/9e22dad0ea13.pdfIn PDF document text
    • http://alcozerox.com/691514516412l9dt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401558/normal_6023755d83c55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501229/normal_5ff027714210b.pdfIn PDF document text
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/5959253.pdfIn PDF document text
    • http://ig-soft-team.com/is_iso_iec_27001lowal.pdfIn PDF document text
    • http://4kuhd.me/41302422590zjs01.pdfIn PDF document text
    • https://gidixolatuloxag.weebly.com/uploads/1/3/1/0/131071157/betozurisekebo_jifukejite.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468838/normal_600397bd94f1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404965/normal_6009e00bc540e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_65ed0db036004ef7810e2ff7cd225fee.pdf?index=trueIn PDF document text
    • https://29159626-56e2-4eb2-a8c1-eb081f451e44.filesusr.com/ugd/a58502_fc7564e4408942c3ae29dcf1f580cd10.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a1f1054-de4d-47c6-a144-2f001ce853a3/3060887241.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66ab4a79-b539-43f6-a19c-a28f3135c82c/between_the_world_and_me_coates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0bc7e52-f70f-4170-b52f-5282a4b61098/8808798764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59cc7bca-d6f3-450f-a494-d6f59c7596e4/44507486623.pdfIn PDF document text
    • https://5a6df620-610b-4d6f-8f1b-71e936bb70bc.filesusr.com/ugd/1f5cef_08100f726a664c69bc00a6e3127d797c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8703c792-73c7-447f-825e-24c7fff55c6f/why_freezer_not_freezing.pdfIn PDF document text
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_e9f586530c564eb780df5f9d8a9c15a5.pdf?index=trueIn 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_off00019ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19CA0 36936 bytes
SHA-256: 41f3d0ff801e4714ca89eadf4260b5236b93a1ffc5f19bbab7112313baff9005
font_01_sfnt_off00020e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20E52 5296 bytes
SHA-256: 6000d9d27fd63ab0be724f501997d52f99707cfb255bcc497865a161cca55ed7
font_02_sfnt_off0002205a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2205A 13984 bytes
SHA-256: 5cae87f25ec785ee4f3f17fb2d2d78266544919f78f0d598fd374b5967e4e562