Malicious PDF — malware analysis report

Static analysis result for SHA-256 6529eae2adb70974…

MALICIOUS

PDF

67.1 KB Created: 2021-03-04 16:57:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: e556b918c0854475aded987b54a3007a SHA-1: 6f3a23a364640fddd50d7925549d7bf26b40cd4f SHA-256: 6529eae2adb70974344beaa3590b1ed7a6198739670311d85693e72737060d0c
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'soxebez.ru', which is likely used to redirect the user to a malicious site. The PDF structure and embedded content suggest it's part of a phishing or malware distribution campaign, potentially using a lure related to 'life cycle of a leopard'.

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
  • 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://soxebez.ru/wix?keyword=life+cycle+of+a+leopard PDF link annotation
    • http://pokezokebawi.mygamesonline.org/haier_mini_refrigerator_manual.pdfIn PDF document text
    • http://kidufamipowanot.mywebcommunity.org/65967276396.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405642/normal_6006549951be8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491933/normal_5fd119dcf0a66.pdfIn PDF document text
    • http://ninavadilu.22web.org/mevufanizufek.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/what_causes_a_washer_to_not_spin_out.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/vexosafugunu/biblia_catolica_para_la_fe_y_la_vida_mexico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70e89afa-56fe-487b-92e7-df154e0d5698/why_is_my_brother_printer_not_picking_up_paper.pdfIn PDF document text
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_eda3b85a856445cf96a6f619c748a6e5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/87983a07-eb75-4ea5-a96c-22a5aa04e7d3/cuh2o6_2_structure.pdfIn PDF document text
    • http://saponasikaxugab.epizy.com/44320211680.pdfIn PDF document text
    • https://c546c886-5aa5-41cc-813f-4ed3e146772c.filesusr.com/ugd/b3e52d_d13e2e19b2ce4a9193b35393c5c76996.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f165d0-7903-40a6-acf1-42429ce54770/how_to_replace_leaking_garbage_disposal.pdfIn PDF document text
    • https://0cfe495c-9a5f-46a1-a5f3-fb21b6211bac.filesusr.com/ugd/7aabb2_d31d571261314ef69adf8050fff70536.pdf?index=trueIn PDF document text
    • https://f06ae689-34e6-4fd9-b749-a5985747e370.filesusr.com/ugd/4117a9_25702c56fbc94c22b1c30ea53cd6b22f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tokudapele/17437631742.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_off0000cc93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC93 5016 bytes
SHA-256: e6f71cc1f2f54e8dfcfa8ceeac282c43dc172d4fd556fccc0c586b43365c65ff
font_01_sfnt_off0000ddc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC6 9960 bytes
SHA-256: c8bdd8023dd3c74cfd977ab4ea82ad2b42526686fc9ca491064743f19e9040d3

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