Malicious PDF — malware analysis report

Static analysis result for SHA-256 567e5cd0fd7dcb4d…

MALICIOUS

PDF

72.9 KB Created: 2021-03-16 13:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca1808c0cd71aaf503778511a36d551f SHA-1: 716150cd26f3fb961617c374072fc904d239ecb8 SHA-256: 567e5cd0fd7dcb4d4423b3799037a5cee9eb8e5cb04b4804dce067e657c103df
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'soxebez.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'software quality assurance plan pdf'. No scripts were extracted, but the presence of external URLs and the nature of the detection suggest it's designed to redirect the user to a malicious site.

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://soxebez.ru/award?keyword=software+quality+assurance+plan+pdf
    • https://cdn.sqhk.co/xiselaza/XmhjfSV/xiwazadojedixipategab.pdf
    • http://ravuwetob.iblogger.org/96065443108.pdf
    • https://cdn.sqhk.co/zitedefew/hUibjd8/ethiopian_construction_project_management_institute_address.pdf
    • http://sedouche.xyz/urticaria_con_angioedemab3b1u.pdf
    • https://cdn.sqhk.co/gixejefi/jArhi3G/42310636958.pdf
    • http://linza.media/lenovo_yoga_book_c930_notebookcheckb7ola.pdf
    • http://slimitalia.space/what_is_definition_of_desktop_databasek0m82.pdf
    • http://hookup157.online/mutetavaneridonarozu5k2su.pdf
    • https://cdn.sqhk.co/gixobujikelu/heigjhv/5th_grade_dividing_decimals_worksheet.pdf
    • http://faceit.su/tesuramelopaditatobarigzvdk.pdf
    • http://pojokuzoxa.iblogger.org/sidim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mefonevimimix/henniker_nh_police_reports.pdf
    • https://bf130ee1-1463-4c69-9604-1b23772ced92.filesusr.com/ugd/b4609a_f7e0ecad42ab47968abeb1d55d1c79d5.pdf?index=true
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_0e2faf956f174dd5857775afa27cd9cc.pdf?index=true
    • https://s3.amazonaws.com/silubebebefuju/icom_756_pro_2_modifications.pdf
    • https://s3.amazonaws.com/pusixa/what_are_the_four_elements_of_diffusion_of_innovation.pdf
    • http://dipulitexaxuz.epizy.com/13210372791.pdf
    • https://s3.amazonaws.com/fojaxexino/rulipinupizetiguterofe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfee.bin
a42e6305950f3f5e69252173d1deeaafa173c972844440ebacde177afecb2408
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEE 5572 bytes
font_01_sfnt_off0000f310.bin
d0de4a80e826368df2a84b0f3f4017f316378d1abf57c28074b077422cf81366
pdf-font-stream PDF embedded font (sfnt) at offset 0xF310 10468 bytes