Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcaef43d4adae1c9…

MALICIOUS

PDF

74.8 KB Created: 2021-02-21 23:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 3c167ca21d1455426527e1f515220815 SHA-1: bfd95cd9b57d75c221f6dd1e0bb1576af11e9938 SHA-256: bcaef43d4adae1c9cbc66564e07751fbace61f362a4085d268fc83a4f86104de
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Rehras sahib in english pdf'.

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://maypoin.ru/strik?utm_term=rehras+sahib+in+english+pdf PDF link annotation
    • http://nikecortez.net/43360953572aztgb.pdfIn PDF document text
    • http://mebelrostov.ru/85121952868zxe43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402706/normal_600a1d51abeb5.pdfIn PDF document text
    • http://fegalaro.iblogger.org/abbyy_finereader_10._0_free_full_version.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_6011b6133e000.pdfIn PDF document text
    • http://istlan.fun/bentley_uk_email_formata1rbr.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/jepinebawo/mtd_yard_machine_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/79396988821.pdfIn PDF document text
    • http://lodabaximuxulul.epizy.com/wibonifunokowetijolem.pdfIn PDF document text
    • http://mijugavagi.epizy.com/free_allah_names.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/swift_learn_to_code_1_answers.pdfIn PDF document text
    • http://zamudijofo.epizy.com/mcgraw-hill_my_math_grade_5_teacher_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/juniper_switch_ex4200_configuration_guide.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_off0000e7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C6 5452 bytes
SHA-256: ba321471e5b818bbcb369ba387ab2ae04b475f24c0091610c45cefd049c8d497
font_01_sfnt_off0000fa49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA49 11116 bytes
SHA-256: 203341627e62140a5723afac0fad82aab9f7ea5bdb00836cb9f99ce109940fea